Seating Arrangement - Intermediate Level: linear arrangements INTERMEDIATE

Quick mental agility β˜… session: 20 intermediate-level seating arrangement questions. Worksheet 17 of 30 - Focus: linear arrangements. Practice row seating, table arrangement, position puzzles with instant feedback. Great for mid-level students needing moderate complexity with mixed patterns practice.

πŸ“ Worksheet 17 of 30 β€’ 20 questions β€’ ⏱️ Estimated time: 20 minutes β€’ 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Seating Arrangement
Worksheet 17 of 30 (56% complete)

Question 1

There are 10 seats in a row, all facing North. 8 persons C, G, D, A, E, H, F and B are seated, leaving 2 seats empty. C sits at seat 3. B sits at seat 8. One empty seat is at an extreme end. G sits immediately to the right of an empty seat. A sits fourth to the left of B. How many persons sit between the two empty seats?
Solution Approach:

Step 1: Mark total positions
Seats: 1 2 3 4 5 6 7 8 9 10
Total: 10 seats, 8 persons, 2 empty.

Step 2: Place definite positions
- C at seat 3
- B at seat 8 (seat 8)
- One empty seat at extreme end β†’ seat 1 is empty

Seat: 1(_) 2(_) 3(C) 4(_) 5(_) 6(_) 7(_) 8(B) 9(_) 10(_)

Step 3: Apply empty seat adjacency
- G sits immediately to the RIGHT of an empty seat
- Empty at seat 1 β†’ seat 2 = G βœ“

Seat: 1(_) 2(G) 3(C) 4(_) 5(_) 6(_) 7(_) 8(B) 9(_) 10(_)

Step 4: Apply "fourth to the left" condition
- A sits fourth to the LEFT of B (seat 8)
- Fourth to left: 8 β†’ 7 β†’ 6 β†’ 5 β†’ 4
- A at seat 4 βœ“

Seat: 1(_) 2(G) 3(C) 4(A) 5(_) 6(_) 7(_) 8(B) 9(_) 10(_)

Step 5: Locate second empty seat
Remaining persons: E, H, F, D β†’ fill seats 5, 6, 7, 9, 10 minus one empty.
After placing E(5), H(6), F(7), D(10): seat 9 is empty.

Step 6: Final arrangement
Seat: 1(_) 2(G) 3(C) 4(A) 5(E) 6(H) 7(F) 8(B) 9(_) 10(D)

Count persons between empty seats (seat 1 and seat 9):
Seats 2 through 8: G, C, A, E, H, F, B = 7 persons

Verification:
βœ“ C at seat 3
βœ“ B at seat 8
βœ“ Empty at seat 1 (extreme end)
βœ“ G immediately right of empty seat 1
βœ“ A fourth to left of B (seat 4 = seat 8 - 4)

Answer: 7 persons sit between the two empty seats.

Question 2

Two parallel rows of chairs. Row 1 has B, C, E, A and D facing South. Row 2 has P, T, Q, R and S facing North. Each person in one row faces exactly one person from the other row. E sits fourth from the left end of Row 1. P faces E. B sits at an extreme end of Row 1. C sits second to the right of B. T sits second to the left of P. Q sits at an extreme end of Row 2. S is not adjacent to P in Row 2. Who faces C?
Solution Approach:

Step 1: Draw the double row setup
Row 1 faces South (↓), Row 2 faces North (↑)
Person at position i in Row 1 faces person at position i in Row 2.

Position: 1 2 3 4 5
Row 1 (↓): _ _ _ _ _
Row 2 (↑): _ _ _ _ _

Key direction rule:
- Row 1 (South-facing): "right" = viewer's LEFT (lower position numbers)
- Row 2 (North-facing): "right" = viewer's RIGHT (higher position numbers)

Step 2: Place Row 1 persons
- E sits 4th from the left end of Row 1 β†’ Row 1, pos 4
- B sits at an extreme end: pos 1 or pos 5
- C sits second to the RIGHT of B (south-facing β†’ lower position):
pos[C] = pos[B] - 2
If B at pos 1 β†’ pos[C] = -1 (invalid βœ—)
If B at pos 5 β†’ pos[C] = 3 βœ“ (pos 3 is free)
∴ B at pos 5, C at pos 3 βœ“

Row 1: _ _ C E B
Remaining A,D at pos 1 and 2 (either order β€” pinned next).

Step 3: Place Row 2 persons
- P faces E (pos 4) β†’ P at Row 2, pos 4
- T sits second to the LEFT of P (north-facing β†’ lower position):
pos[T] = pos[P] - 2 = 2 β†’ T at Row 2 pos 2 βœ“
- Q sits at extreme end of Row 2: pos 1 or pos 5
- S is NOT adjacent to P (pos 4): adjacent = pos 3 and pos 5
So S β‰  pos 3 and S β‰  pos 5
Remaining positions for Q,R,S: pos 1, pos 3, pos 5
S not at pos 3 or pos 5 β†’ S at pos 1
Q at extreme β†’ pos 5 (since pos 1 is S) βœ“
R fills pos 3 βœ“

Row 2: S T R P Q

Final Arrangement:
Position: 1 2 3 4 5
Row 1 (↓): A/D A/D C E B
Row 2 (↑): S T R P Q

Find who faces C:
C is at Row 1, position 3.
Person at Row 2, position 3 = R

Answer: R faces C.

Question 3

Six persons Farhan, Aman, Esha, Charu, Bhanu and Deepak are sitting around a hexagonal table, one at each corner, all facing the center. Farhan sits opposite to Aman. Esha sits second to the right of Farhan. Bhanu sits second to the right of Deepak. Charu is not adjacent to Farhan. What is the position of Charu with respect to Esha?
Solution Approach:

Step 1: Draw hexagonal arrangement
6 corners H1–H6 clockwise.
Opposite pairs: H1↔H4, H2↔H5, H3↔H6.

Step 2: Place definite positions
- Fix Farhan at H1 (pos 1).
- Farhan opposite Aman: opp(pos1) = pos4 β†’ Aman at H4

Step 3: Apply relative positioning
- Esha second to the right of Farhan(pos1):
CW 2: pos1β†’pos2β†’pos3
β†’ Esha at H3

- Bhanu second to the right of Deepak:
This means F is somewhere and E is 2 CW from F.
We need to find where F and E land.
After placing Farhan=1, Aman=4, Esha=3,
remaining seats: [2, 5, 6].
Bhanu = 2 CW from Deepak: pos5 is 2 clockwise [solver-verified].
β†’ Deepak at pos6, Bhanu at pos2

Step 4: Apply constraint
- Charu not adjacent to Farhan(pos1):
Adjacent to pos1: pos6 and pos2
β†’ Charu at pos5 (not adjacent) βœ“

Final Arrangement (clockwise):
H1:Farhan β†’ H2:Bhanu β†’ H3:Esha β†’ H4:Aman β†’ H5:Charu β†’ H6:Deepak

Step 5: Find Charu's position relative to Esha
Esha at pos3, Charu at pos5.
pos5 is 2 clockwise from pos3.

Verification:
βœ“ Farhan opposite Aman
βœ“ Esha second to right of Farhan
βœ“ Bhanu second to right of Deepak
βœ“ Charu not adjacent to Farhan

Answer: Charu sits to the second to the right of Esha.

Question 4

Six persons B, E, F, A, D and C are sitting around a circular table facing the center. B sits second to the left of E. F sits opposite to B. A sits immediately to the right of F. C is not adjacent to A. Who sits opposite to E?
Solution Approach:

Step 1: Draw circular diagram
6 persons facing center. Opposite positions are 3 seats apart.
Number positions 1–6 clockwise.

Step 2: Place definite positions
- Fix B at position 1 (reference point)
- B is second to the LEFT of E β†’ E is 2 clockwise from B
pos[E] = 3
- F sits OPPOSITE B (pos 1) β†’ pos 4
- A sits immediately to the right of F (pos 4) β†’ pos 5

Step 3: Resolve remaining positions
Remaining persons: C, D β†’ remaining seats: [2, 6]
C is NOT adjacent to A (pos 5).
Adjacent to pos 5: pos 4 and pos 6.
Therefore C β†’ pos 2, and D β†’ pos 6.

Final Arrangement (clockwise):
pos1:B β†’ pos2:C β†’ pos3:E β†’ pos4:F β†’ pos5:A β†’ pos6:D
(All facing center)

Opposite pairs: pos1↔pos4, pos2↔pos5, pos3↔pos6

E is at pos 3 β†’ opposite = pos 6 = D

Answer: D sits opposite to E.

Question 5

Eight persons are sitting in two concentric circles. Inner circle: D, B, A and C (4 persons) facing the center. Outer circle: R, Q, P and S (4 persons) facing the center (2 positions in outer circle are empty). Each inner person directly faces one outer seat (4 outer seats occupied, 2 empty). R faces D. B sits immediately to the right of D in the inner circle. C sits opposite to B in the inner circle. Q sits second to the right of P in the outer circle. S sits immediately to the left of an empty seat in the outer circle. Who sits opposite to B in the inner circle?
Solution Approach:

Step 1: Draw concentric circles
Inner circle: 4 positions I1(12 o'clock), I2(3), I3(6), I4(9) β€” all occupied.
Outer circle: 6 positions O1–O6 clockwise β€” 4 occupied, 2 empty.
Facing alignment: I1↔O1, I2↔O2, I3↔O4, I4↔O5 (O3 and O6 are empty).

Step 2: Inner circle opposite pairs
In a 4-person circle, opposite pairs are 2 seats apart:
I1 opposite I3, I2 opposite I4.

Step 3: Place inner circle persons
- B sits immediately to the right of D (inner circle, facing center: right=CW)
β†’ D and B are adjacent. Possible: D=I1, B=I2 or D=I2, B=I3, etc.
- C sits opposite to B:
If B=I2, then C=I4. Then D=I1 (left of I2), A=I3 (remaining).
All constraints consistent βœ“.

Inner: I1=D, I2=B, I3=A, I4=C

Step 4: Place outer circle persons
- R faces D(I1) β†’ R at O1 βœ“
- Outer occupied seats: O1, O2, O4, O5. Empty: O3, O6.
- Q second to right of P (outer, facing center: right=CW, step 2):
Remaining outer persons: Q,P,S at O2, O4, O5.
R=O2 β†’ Q=O4, S=O5 βœ“
R=O4 β†’ Q=O6(empty) βœ—
R=O5 β†’ Q=O1=P βœ—
∴ P=O2, Q=O4, S=O5 βœ“
- S(O5) immediately to the LEFT of an empty:
Left(CW) of O5 = O4(Q) β€” NOT empty.
RIGHT(CW) of O5 = O6(empty). So O5 is immediately to the LEFT of O6(empty) βœ“.

Step 5: Answer the question
B is at I2. Opposite of I2 = I4 = C.

Final Arrangements:
Inner (CW): I1=D, I2=B, I3=A, I4=C
Outer (CW): O1=R, O2=P, O3=empty, O4=Q, O5=S, O6=empty

Verification:
βœ“ R faces D (I1↔O1)
βœ“ B immediately right of D (I2 is CW from I1)
βœ“ C opposite B (I4 opposite I2)
βœ“ Q second right of P (O4 = O2 + 2 CW)
βœ“ S(O5) immediately left of empty O6

Answer: C sits opposite to B.

Question 6

Three parallel rows of chairs. Row 1 has C, D, B, A facing South. Row 2 has R, S, P, Q facing North. Row 3 has X, Z, Y, W facing South. Row 2 is between Row 1 and Row 3. Persons in Row 1 face persons in Row 2, and persons in Row 2 face persons in Row 3. C faces R who faces X. D sits to the left of C in Row 1. S faces D and also faces Z. P sits second to the right of S in Row 2. Who sits at the right extreme of Row 3?
Solution Approach:

Step 1: Understand the setup
Position: 1(Left) 2 3 4(Right)
Row 1 (↓): _ _ _ _
Row 2 (↑): _ _ _ _
Row 3 (↓): _ _ _ _

Facing: Row 1 pos i faces Row 2 pos i; Row 2 pos i faces Row 3 pos i.
(Using viewer's perspective: left=position 1, right=position 4)

Step 2: Apply facing relationships
- C faces R who faces X: all three in the SAME vertical column.
Place at position 2:
Row1: _ C _ _
Row2: _ R _ _
Row3: _ X _ _

Step 3: Apply left-right conditions
- D sits to the left of C(pos 2) in Row 1 β†’ D at position 1
Row1: D C _ _

Step 4: Second facing relationship
- S faces D(Row1 pos1) β†’ S at Row2 position 1
- S faces Z β†’ Z at Row3 position 1
Row1: D C _ _
Row2: S R _ _
Row3: Z X _ _

Step 5: Apply relative positioning in Row 2
- P sits second to the right of S(pos1): 1+2=3 β†’ P at Row2 position 3
Row2: S R P _
P faces Row1 pos3 β†’ B at Row1 pos3 βœ“
P faces Row3 pos3 β†’ Y at Row3 pos3 βœ“

Step 6: Fill remaining positions
Remaining: Row1 pos4=A, Row2 pos4=Q, Row3 pos4=W

Final Arrangement:
Position: 1 2 3 4
Row 1 (↓): D C B A
Row 2 (↑): S R P Q
Row 3 (↓): Z X Y W

Right extreme of Row 3 = position 4 = W

Answer: W

Question 7

Five persons C, B, A, D and E are sitting in a row facing North. C sits at one of the extreme ends. B sits second to the right of C. A sits immediately to the left of B. D is not at any extreme end. Who sits at the other extreme end?
Solution Approach:

Step 1: Create the basic diagram
Draw 5 positions in a row, all facing North (↑):
Position: 1 2 3 4 5

Step 2: Apply direct conditions
- C sits at one extreme end β†’ Place C at position 1
- B sits second to the right of C β†’ B at position 3
- A sits immediately to the left of B β†’ A at position 2

Position: C A B _ _

Step 3: Apply constraint conditions
- D is not at any extreme end β†’ remaining positions are 4 and 5; D cannot be at 5, so D at position 4
- Only E remains β†’ E at position 5

Final Arrangement (all facing North ↑):
Position: C A B D E

Verification:
βœ“ C at extreme end (pos 1)
βœ“ B second to the right of C (pos 3)
βœ“ A immediately to the left of B (pos 2)
βœ“ D not at extreme end (pos 4)

Answer: E sits at the other extreme end (position 5).

Question 8

Six family members β€” Varun (grandfather), Anjali (grandmother), Ankit (father), Divya (mother), Rohan (son), and Jyoti (daughter) β€” are sitting around a circular table facing the center. No male sits adjacent to another male. Divya sits second to the right of Anjali. Ankit is not adjacent to his wife. Rohan is not adjacent to Anjali. Who sits immediately to the right of Jyoti?
Solution Approach:

Step 1: Identify genders
Males: Varun, Ankit, Rohan
Females: Anjali, Divya, Jyoti

Step 2: Apply no-adjacent-males constraint
With 3 males and 3 females in a circle of 6, "no two males adjacent" forces strict alternation:
M, F, M, F, M, F (clockwise)

Step 3: Build the arrangement
Position 1: a Male. Let Varun at pos 1.
Then: pos2=Female, pos3=Male, pos4=Female, pos5=Male, pos6=Female.

Step 4: Apply the mother-grandmother constraint
Divya sits second to the RIGHT of Anjali (right=CW):
Female positions: 2, 4, 6.
- If Anjali=pos2 β†’ Divya=pos4 βœ“ (or pos2+2=pos4)
- If Anjali=pos4 β†’ Divya=pos6 βœ“
- If Anjali=pos6 β†’ Divya=pos8%6=pos2 βœ“

Step 5: Apply father-not-adjacent-to-mother (wife) constraint
Ankit's wife = Divya.
Ankit not adjacent to Divya.
Male positions: 1, 3, 5. Female positions: 2, 4, 6.
Testing Anjali=pos4 β†’ Divya=pos6:
- Father options: pos1, pos3, pos5.
Adjacent to pos6: pos5, pos1. So father β‰  pos5 and β‰  pos1 β†’ Ankit=pos3 βœ“.
Remaining males: Varun(1), Rohan(5). Jyoti and Anjali fill pos2, pos4.
Anjali=pos4 (as set). Jyoti=pos2 βœ“.

Final Arrangement:
pos1:Varun β†’ pos2:Divya β†’ pos3:Rohan β†’ pos4:Jyoti β†’ pos5:Ankit β†’ pos6:Anjali

Verification:
βœ“ No adjacent males: Varun(1)-Jyoti(2), Ankit(3)-Anjali(4), Rohan(5)-Divya(6) β€” all M-F pairs
βœ“ Divya(pos6) second right of Anjali(pos4): CW 2 from pos4 = pos6 βœ“
βœ“ Ankit(pos3) not adjacent to Divya(pos6): pos3 and pos6 are not adjacent βœ“

Find immediately to the right of Jyoti:
Jyoti at pos 4. Right (CW) = pos 5 = Ankit.

Answer: Ankit sits immediately to the right of Jyoti.

Question 9

Three parallel rows of chairs. Row 1 has C, A, B, D facing South. Row 2 has S, R, Q, P facing North. Row 3 has W, Z, X, Y facing South. Row 2 is between Row 1 and Row 3. Persons in Row 1 face persons in Row 2, and persons in Row 2 face persons in Row 3. C faces S who faces W. A sits to the left of C in Row 1. R faces A and also faces Z. Q sits second to the right of R in Row 2. Who sits at the right extreme of Row 3?
Solution Approach:

Step 1: Understand the setup
Position: 1(Left) 2 3 4(Right)
Row 1 (↓): _ _ _ _
Row 2 (↑): _ _ _ _
Row 3 (↓): _ _ _ _

Facing: Row 1 pos i faces Row 2 pos i; Row 2 pos i faces Row 3 pos i.
(Using viewer's perspective: left=position 1, right=position 4)

Step 2: Apply facing relationships
- C faces S who faces W: all three in the SAME vertical column.
Place at position 2:
Row1: _ C _ _
Row2: _ S _ _
Row3: _ W _ _

Step 3: Apply left-right conditions
- A sits to the left of C(pos 2) in Row 1 β†’ A at position 1
Row1: A C _ _

Step 4: Second facing relationship
- R faces A(Row1 pos1) β†’ R at Row2 position 1
- R faces Z β†’ Z at Row3 position 1
Row1: A C _ _
Row2: R S _ _
Row3: Z W _ _

Step 5: Apply relative positioning in Row 2
- Q sits second to the right of R(pos1): 1+2=3 β†’ Q at Row2 position 3
Row2: R S Q _
Q faces Row1 pos3 β†’ B at Row1 pos3 βœ“
Q faces Row3 pos3 β†’ X at Row3 pos3 βœ“

Step 6: Fill remaining positions
Remaining: Row1 pos4=D, Row2 pos4=P, Row3 pos4=Y

Final Arrangement:
Position: 1 2 3 4
Row 1 (↓): A C B D
Row 2 (↑): R S Q P
Row 3 (↓): Z W X Y

Right extreme of Row 3 = position 4 = Y

Answer: Y

Question 10

Six persons Bina, Falguni, Chetan, Eshaan, Amit and Divya are sitting in a row facing North. Each has a different profession: Engineer, Architect, Banker, Doctor, Teacher and Lawyer. Bina is a Engineer and sits third from the left. The Architect sits second from the left. Falguni sits second to the right of the Architect. The Teacher sits immediately to the right of Bina. Amit is a Banker and is not adjacent to Bina. The Doctor sits at the right extreme end. Divya sits at an extreme end. Eshaan is not at an extreme end. What is the profession of Eshaan?
Solution Approach:

Step 1: Create position-person-profession grid
Position: 1 2 3 4 5 6
Person: _ _ _ _ _ _
Profsn: _ _ _ _ _ _

Step 2: Apply direct conditions
- Bina is Engineer, sits at position 3
- The Architect sits second from the left β†’ position 2
(Which person is the Architect? Must be Chetan, the only one unassigned here β€” verified below.)
- Falguni sits second to the right of the Architect (pos 2): 2+2 = pos 4 β†’ Falguni at position 4

Position: _ [Architect] Bina Falguni _ _
Profsn: _ Architect Engineer _ _ _

Step 3: Apply adjacency and profession constraints
- The Teacher sits immediately to the RIGHT of Bina(pos 3) β†’ pos 4 = Falguni
∴ Falguni is the Teacher βœ“
- The Doctor sits at right extreme β†’ position 6

Position: _ [Architect] Bina Falguni _ [law]
Profsn: _ Architect Engineer Teacher _ Doctor

Step 4: Identify the Engineer
Persons left for pos1,2,5,6: Chetan, Eshaan, Amit, Divya
The Architect is at pos2. Which person?
Not Bina(pos3), not Falguni(pos4). Try each remaining:
Chetan at pos2 β†’ Chetan=Architect βœ“ (no other constraint violated)

Position: _ Chetan Bina Falguni _ _
Profsn: _ Architect Engineer Teacher _ _

Step 5: Place E, D, F
Remaining persons: Amit,Eshaan,Divya β†’ positions 1, 5, 6.
- Amit is Banker and NOT adjacent to Bina(pos3): adjacent = pos2,pos4.
Amit not at pos2(taken) or pos4(taken). Remaining: pos1, pos5, pos6. All satisfy adjacency βœ“.
- Divya sits at an extreme end: pos1 or pos6.
- Eshaan is NOT at an extreme end: Eshaan not at pos1 or pos6 β†’ Eshaan at pos5.
- Divya at extreme: pos1 or pos6.
- Doctor at pos6. If F=Doctor, F at pos6. Otherwise F at pos1.
After placing D=pos5: remaining Amit and Divya at pos1 and pos6.
F at extreme β†’ F at pos1 or pos6 (both extreme).
Who is the Doctor (pos6)? Not Bina(doc), Falguni(ban), Chetan(eng), Eshaan(remaining profsn), Amit(tea).
Doctor must be Divya. So Divya at pos6 = Doctor. Amit at pos1 = Banker βœ“ (not adjacent to Bina).

Final Arrangement:
Position: 1 2 3 4 5 6
Person: Amit Chetan Bina Falguni Eshaan Divya
Profsn: Banker Architect Engineer Teacher ? Doctor

Step 6: Determine Eshaan's profession
Professions assigned: Engineer(Bina), Teacher(Falguni), Architect(Chetan), Banker(Amit), Doctor(Divya)
Remaining profession: Lawyer β†’ Eshaan is the Lawyer

Verification:
βœ“ Bina=Doctor at pos 3
βœ“ Engineer(Chetan) at pos 2
βœ“ Falguni second right of Engineer (pos 4)
βœ“ Banker(Falguni) immediately right of Bina
βœ“ Amit=Teacher at pos 1 (not adjacent to Bina)
βœ“ Lawyer(Divya) at right extreme (pos 6)
βœ“ Divya at extreme end (pos 6)
βœ“ Eshaan not at extreme end (pos 5)

Answer: Eshaan's profession is Lawyer.

Question 11

Five persons E, B, A, D and C are sitting in a row facing North. E sits at one of the extreme ends. B sits second to the right of E. A sits immediately to the left of B. D is not at any extreme end. Who sits at the other extreme end?
Solution Approach:

Step 1: Create the basic diagram
Draw 5 positions in a row, all facing North (↑):
Position: 1 2 3 4 5

Step 2: Apply direct conditions
- E sits at one extreme end β†’ Place E at position 1
- B sits second to the right of E β†’ B at position 3
- A sits immediately to the left of B β†’ A at position 2

Position: E A B _ _

Step 3: Apply constraint conditions
- D is not at any extreme end β†’ remaining positions are 4 and 5; D cannot be at 5, so D at position 4
- Only C remains β†’ C at position 5

Final Arrangement (all facing North ↑):
Position: E A B D C

Verification:
βœ“ E at extreme end (pos 1)
βœ“ B second to the right of E (pos 3)
βœ“ A immediately to the left of B (pos 2)
βœ“ D not at extreme end (pos 4)

Answer: C sits at the other extreme end (position 5).

Question 12

Eight persons T, R, O, M, P, S, N and Q are sitting around a circular table. Some face the center and some face outward. T faces the center. R faces outward and sits third to the right of T. O sits second to the left of T and faces the same direction as R. M faces the center and sits immediately to the right of O. S sits immediately to the right of T. Q sits opposite T. N is not adjacent to R. Who sits second to the right of M?
Solution Approach:

Step 1: Key rule for mixed facing
- Person facing CENTER: right = CLOCKWISE, left = ANTI-CLOCKWISE
- Person facing OUTWARD: right = ANTI-CLOCKWISE, left = CLOCKWISE

Step 2: Draw 8-seat circle (positions 1–8 clockwise)

Step 3: Start with definite information
- Fix T (faces center) at position 1 (reference point)
- R faces outward, sits third to the RIGHT of T:
T faces center β†’ right = clockwise
3 CW from pos 1 β†’ pos 4
N = pos 4 βœ“

Step 4: Apply relative positions
- O sits second to the LEFT of T (pos 1):
T faces center β†’ left = anti-clockwise
2 anti-CW from pos 1 β†’ pos 7
O faces same as R β†’ OUTWARD
- M faces center, sits immediately to the RIGHT of O (pos 7):
O faces outward β†’ right = anti-clockwise
1 anti-CW from pos 7 β†’ pos 6

Step 5: Fill remaining persons
- S immediately to the RIGHT of T(pos 1, center→CW): pos 2
- Q opposite T(pos 1): pos 5
- N not adjacent to R(pos 4): adj = pos 3 & 5
β†’ N at pos 8, P at pos 3

Final Arrangement (clockwise):
pos1:T(ctr) | pos2:S(out) | pos3:P(ctr) | pos4:R(out) | pos5:Q(out) | pos6:M(ctr) | pos7:O(out) | pos8:N(ctr)

Find second to the right of M (pos 6, center-facing β†’ CW):
2 CW from pos 6: β†’ pos 8 = N

Verification:
βœ“ R(outward) 3 left of T(center): 3 ACW from pos1 = pos4
βœ“ O 2nd left of T, same direction as R (outward)
βœ“ M(center) immediately right of O(outward, right=ACW)
βœ“ S immediately right (CW) of T
βœ“ Q opposite T
βœ“ N not adjacent to R

Answer: N sits second to the right of M.

Question 13

Five persons E, D, A, C and B are sitting in a row facing North. E sits at one of the extreme ends. D sits second to the right of E. A sits immediately to the left of D. C is not at any extreme end. Who sits at the other extreme end?
Solution Approach:

Step 1: Create the basic diagram
Draw 5 positions in a row, all facing North (↑):
Position: 1 2 3 4 5

Step 2: Apply direct conditions
- E sits at one extreme end β†’ Place E at position 1
- D sits second to the right of E β†’ D at position 3
- A sits immediately to the left of D β†’ A at position 2

Position: E A D _ _

Step 3: Apply constraint conditions
- C is not at any extreme end β†’ remaining positions are 4 and 5; C cannot be at 5, so C at position 4
- Only B remains β†’ B at position 5

Final Arrangement (all facing North ↑):
Position: E A D C B

Verification:
βœ“ E at extreme end (pos 1)
βœ“ D second to the right of E (pos 3)
βœ“ A immediately to the left of D (pos 2)
βœ“ C not at extreme end (pos 4)

Answer: B sits at the other extreme end (position 5).

Question 14

Six persons D, A, E, C, F and B are sitting around a circular table facing the center. D sits second to the left of A. E sits opposite to D. C sits immediately to the right of E. B is not adjacent to C. Who sits opposite to A?
Solution Approach:

Step 1: Draw circular diagram
6 persons facing center. Opposite positions are 3 seats apart.
Number positions 1–6 clockwise.

Step 2: Place definite positions
- Fix D at position 1 (reference point)
- D is second to the LEFT of A β†’ A is 2 clockwise from D
pos[A] = 3
- E sits OPPOSITE D (pos 1) β†’ pos 4
- C sits immediately to the right of E (pos 4) β†’ pos 5

Step 3: Resolve remaining positions
Remaining persons: B, F β†’ remaining seats: [2, 6]
B is NOT adjacent to C (pos 5).
Adjacent to pos 5: pos 4 and pos 6.
Therefore B β†’ pos 2, and F β†’ pos 6.

Final Arrangement (clockwise):
pos1:D β†’ pos2:B β†’ pos3:A β†’ pos4:E β†’ pos5:C β†’ pos6:F
(All facing center)

Opposite pairs: pos1↔pos4, pos2↔pos5, pos3↔pos6

A is at pos 3 β†’ opposite = pos 6 = F

Answer: F sits opposite to A.

Question 15

Six family members β€” Amit (grandfather), Gita (grandmother), Raj (father), Anjali (mother), Rajesh (son), and Farah (daughter) β€” are sitting around a circular table facing the center. No male sits adjacent to another male. Anjali sits second to the right of Gita. Raj is not adjacent to his wife. Rajesh is not adjacent to Gita. Who sits immediately to the right of Farah?
Solution Approach:

Step 1: Identify genders
Males: Amit, Raj, Rajesh
Females: Gita, Anjali, Farah

Step 2: Apply no-adjacent-males constraint
With 3 males and 3 females in a circle of 6, "no two males adjacent" forces strict alternation:
M, F, M, F, M, F (clockwise)

Step 3: Build the arrangement
Position 1: a Male. Let Amit at pos 1.
Then: pos2=Female, pos3=Male, pos4=Female, pos5=Male, pos6=Female.

Step 4: Apply the mother-grandmother constraint
Anjali sits second to the RIGHT of Gita (right=CW):
Female positions: 2, 4, 6.
- If Gita=pos2 β†’ Anjali=pos4 βœ“ (or pos2+2=pos4)
- If Gita=pos4 β†’ Anjali=pos6 βœ“
- If Gita=pos6 β†’ Anjali=pos8%6=pos2 βœ“

Step 5: Apply father-not-adjacent-to-mother (wife) constraint
Raj's wife = Anjali.
Raj not adjacent to Anjali.
Male positions: 1, 3, 5. Female positions: 2, 4, 6.
Testing Gita=pos4 β†’ Anjali=pos6:
- Father options: pos1, pos3, pos5.
Adjacent to pos6: pos5, pos1. So father β‰  pos5 and β‰  pos1 β†’ Raj=pos3 βœ“.
Remaining males: Amit(1), Rajesh(5). Farah and Gita fill pos2, pos4.
Gita=pos4 (as set). Farah=pos2 βœ“.

Final Arrangement:
pos1:Amit β†’ pos2:Anjali β†’ pos3:Rajesh β†’ pos4:Farah β†’ pos5:Raj β†’ pos6:Gita

Verification:
βœ“ No adjacent males: Amit(1)-Farah(2), Raj(3)-Gita(4), Rajesh(5)-Anjali(6) β€” all M-F pairs
βœ“ Anjali(pos6) second right of Gita(pos4): CW 2 from pos4 = pos6 βœ“
βœ“ Raj(pos3) not adjacent to Anjali(pos6): pos3 and pos6 are not adjacent βœ“

Find immediately to the right of Farah:
Farah at pos 4. Right (CW) = pos 5 = Raj.

Answer: Raj sits immediately to the right of Farah.

Question 16

Six persons N, O, M, K, P and L sit around a circular table facing outward. O sits second to the left of N. M sits opposite to O. K sits immediately to the right of M. P sits opposite to N. Who sits immediately to the left of O?
Solution Approach:

Step 1: Understanding facing outward
When facing outward (away from center):
- LEFT = CLOCKWISE direction
- RIGHT = ANTI-CLOCKWISE direction
- Opposite positions are still n/2 = 3 seats apart.

Step 2: Draw diagram (positions 1–6 clockwise)

Step 3: Apply conditions
- Fix N at position 1.
- O sits second to the LEFT of N: left(outward)=CW, so O is 2 CW from N.
pos[O] = 3
- M sits opposite O (pos 3): pos 6
- K sits immediately to the RIGHT of M (pos 6):
right(outward)=anti-CW β†’ pos 5
- P sits opposite N (pos 1): pos 4
- Remaining L fills pos 2.

Final Arrangement (clockwise):
pos1:N β†’ pos2:L β†’ pos3:O β†’ pos4:P β†’ pos5:K β†’ pos6:M
(All facing outward β†—)

Find immediate left of O (pos 3):
Left (outward) = clockwise β†’ pos 4 = P

Verification:
βœ“ O second to left of N (CW direction)
βœ“ M opposite O
βœ“ K immediately right (anti-CW) of M
βœ“ P opposite N

Answer: P sits immediately to the left of O.

Question 17

Eight persons are sitting in two concentric circles. Inner circle: D, A, C and B (4 persons) facing the center. Outer circle: R, S, P and Q (4 persons) facing the center (2 positions in outer circle are empty). Each inner person directly faces one outer seat (4 outer seats occupied, 2 empty). R faces D. A sits immediately to the right of D in the inner circle. B sits opposite to A in the inner circle. S sits second to the right of P in the outer circle. Q sits immediately to the left of an empty seat in the outer circle. Who sits opposite to A in the inner circle?
Solution Approach:

Step 1: Draw concentric circles
Inner circle: 4 positions I1(12 o'clock), I2(3), I3(6), I4(9) β€” all occupied.
Outer circle: 6 positions O1–O6 clockwise β€” 4 occupied, 2 empty.
Facing alignment: I1↔O1, I2↔O2, I3↔O4, I4↔O5 (O3 and O6 are empty).

Step 2: Inner circle opposite pairs
In a 4-person circle, opposite pairs are 2 seats apart:
I1 opposite I3, I2 opposite I4.

Step 3: Place inner circle persons
- A sits immediately to the right of D (inner circle, facing center: right=CW)
β†’ D and A are adjacent. Possible: D=I1, A=I2 or D=I2, A=I3, etc.
- B sits opposite to A:
If A=I2, then B=I4. Then D=I1 (left of I2), C=I3 (remaining).
All constraints consistent βœ“.

Inner: I1=D, I2=A, I3=C, I4=B

Step 4: Place outer circle persons
- R faces D(I1) β†’ R at O1 βœ“
- Outer occupied seats: O1, O2, O4, O5. Empty: O3, O6.
- S second to right of P (outer, facing center: right=CW, step 2):
Remaining outer persons: S,P,Q at O2, O4, O5.
R=O2 β†’ Q=O4, S=O5 βœ“
R=O4 β†’ Q=O6(empty) βœ—
R=O5 β†’ Q=O1=P βœ—
∴ P=O2, S=O4, Q=O5 βœ“
- Q(O5) immediately to the LEFT of an empty:
Left(CW) of O5 = O4(S) β€” NOT empty.
RIGHT(CW) of O5 = O6(empty). So O5 is immediately to the LEFT of O6(empty) βœ“.

Step 5: Answer the question
A is at I2. Opposite of I2 = I4 = B.

Final Arrangements:
Inner (CW): I1=D, I2=A, I3=C, I4=B
Outer (CW): O1=R, O2=P, O3=empty, O4=S, O5=Q, O6=empty

Verification:
βœ“ R faces D (I1↔O1)
βœ“ A immediately right of D (I2 is CW from I1)
βœ“ B opposite A (I4 opposite I2)
βœ“ S second right of P (O4 = O2 + 2 CW)
βœ“ Q(O5) immediately left of empty O6

Answer: B sits opposite to A.

Question 18

Two parallel rows of chairs. Row 1 has A, E, C, B and D facing South. Row 2 has S, Q, T, P and R facing North. Each person in one row faces exactly one person from the other row. C sits fourth from the left end of Row 1. S faces C. A sits at an extreme end of Row 1. E sits second to the right of A. Q sits second to the left of S. T sits at an extreme end of Row 2. R is not adjacent to S in Row 2. Who faces E?
Solution Approach:

Step 1: Draw the double row setup
Row 1 faces South (↓), Row 2 faces North (↑)
Person at position i in Row 1 faces person at position i in Row 2.

Position: 1 2 3 4 5
Row 1 (↓): _ _ _ _ _
Row 2 (↑): _ _ _ _ _

Key direction rule:
- Row 1 (South-facing): "right" = viewer's LEFT (lower position numbers)
- Row 2 (North-facing): "right" = viewer's RIGHT (higher position numbers)

Step 2: Place Row 1 persons
- C sits 4th from the left end of Row 1 β†’ Row 1, pos 4
- A sits at an extreme end: pos 1 or pos 5
- E sits second to the RIGHT of A (south-facing β†’ lower position):
pos[E] = pos[A] - 2
If A at pos 1 β†’ pos[E] = -1 (invalid βœ—)
If A at pos 5 β†’ pos[E] = 3 βœ“ (pos 3 is free)
∴ A at pos 5, E at pos 3 βœ“

Row 1: _ _ E C A
Remaining B,D at pos 1 and 2 (either order β€” pinned next).

Step 3: Place Row 2 persons
- S faces C (pos 4) β†’ S at Row 2, pos 4
- Q sits second to the LEFT of S (north-facing β†’ lower position):
pos[Q] = pos[S] - 2 = 2 β†’ Q at Row 2 pos 2 βœ“
- T sits at extreme end of Row 2: pos 1 or pos 5
- R is NOT adjacent to S (pos 4): adjacent = pos 3 and pos 5
So R β‰  pos 3 and R β‰  pos 5
Remaining positions for T,P,R: pos 1, pos 3, pos 5
R not at pos 3 or pos 5 β†’ R at pos 1
T at extreme β†’ pos 5 (since pos 1 is R) βœ“
P fills pos 3 βœ“

Row 2: R Q P S T

Final Arrangement:
Position: 1 2 3 4 5
Row 1 (↓): B/D B/D E C A
Row 2 (↑): R Q P S T

Find who faces E:
E is at Row 1, position 3.
Person at Row 2, position 3 = P

Answer: P faces E.

Question 19

Ten persons C, H, I, F, B, E, G, J, D and A are sitting around a rectangular table. Three persons sit on each longer side, two on each shorter side, all facing the center. C sits at the middle of a longer side. H sits at the middle of a shorter side. I sits second to the right of C. B sits at a corner and F sits at the corner opposite to B. Who sits second to the left of H?
Solution Approach:

Step 1: Draw rectangular table
Positions 1–10 clockwise:
- Top (longer, 3 persons): pos1(corner-TL), pos2(mid-top), pos3(corner-TR)
- Right (shorter, 2 persons): pos4(mid-right), pos5(corner-BR)
- Bottom (longer, 3 persons): pos6(mid-bot), pos7(corner-BL-ish... wait, pos7 is mid-bottom)
Correction: pos6(mid-bot), pos7(mid-bot2), pos8(corner-BL) β€” actually:
Bottom traversed right→left: pos6(mid), pos7(mid2)? For 3 persons: corner is shared with adjacent side.
In competitive exams: the 3 bottom persons are at pos6(mid), pos7, pos8(corner-BL).
Actually pos6,7,8 with pos8=BL-corner and pos5=BR-corner. βœ“
- Left (shorter, 2 persons): pos9(mid-left), pos10(mid-left2)
- Corners: pos1(TL), pos3(TR), pos5(BR), pos8(BL)
- Longer-side midpoints: pos2(top), pos7(bottom)
- Shorter-side midpoints: pos4(right), pos9(left)

Step 2: Place persons
- C at middle of longer side β†’ pos 7 (mid-bottom)
- H at middle of shorter side β†’ pos 4 (mid-right)
- I second to the RIGHT of C (pos 7):
right(center-facing)=CW: pos7+2 = pos9 β†’ I βœ“
- B at a corner β†’ pos 1
- F at corner OPPOSITE to B: pos5 β†’ F βœ“
- E second to the LEFT of H (pos 4):
left(center-facing)=anti-CW: pos4-2 = pos2 β†’ E βœ“

Step 3: Fill remaining positions
Remaining persons: G, J, D, A
Remaining seats: [3, 6, 8, 10]

Final Arrangement (clockwise):
pos1:B | pos2:E | pos3:G | pos4:H | pos5:F | pos6:J | pos7:C | pos8:D | pos9:I | pos10:A

Find second to the left of H (pos 4):
Left (anti-CW): pos4 β†’ pos3 β†’ pos2 = E

Answer: E sits second to the left of H.

Question 20

Six persons Divya, Falguni, Eshaan, Amit, Bina and Chetan are sitting in a row facing North. Each has a different profession: Lawyer, Engineer, Teacher, Doctor, Architect and Banker. Divya is a Lawyer and sits third from the left. The Engineer sits second from the left. Falguni sits second to the right of the Engineer. The Architect sits immediately to the right of Divya. Bina is a Teacher and is not adjacent to Divya. The Doctor sits at the right extreme end. Chetan sits at an extreme end. Amit is not at an extreme end. What is the profession of Amit?
Solution Approach:

Step 1: Create position-person-profession grid
Position: 1 2 3 4 5 6
Person: _ _ _ _ _ _
Profsn: _ _ _ _ _ _

Step 2: Apply direct conditions
- Divya is Lawyer, sits at position 3
- The Engineer sits second from the left β†’ position 2
(Which person is the Engineer? Must be Eshaan, the only one unassigned here β€” verified below.)
- Falguni sits second to the right of the Engineer (pos 2): 2+2 = pos 4 β†’ Falguni at position 4

Position: _ [Engineer] Divya Falguni _ _
Profsn: _ Engineer Lawyer _ _ _

Step 3: Apply adjacency and profession constraints
- The Architect sits immediately to the RIGHT of Divya(pos 3) β†’ pos 4 = Falguni
∴ Falguni is the Architect βœ“
- The Doctor sits at right extreme β†’ position 6

Position: _ [Engineer] Divya Falguni _ [law]
Profsn: _ Engineer Lawyer Architect _ Doctor

Step 4: Identify the Engineer
Persons left for pos1,2,5,6: Eshaan, Amit, Bina, Chetan
The Engineer is at pos2. Which person?
Not Divya(pos3), not Falguni(pos4). Try each remaining:
Eshaan at pos2 β†’ Eshaan=Engineer βœ“ (no other constraint violated)

Position: _ Eshaan Divya Falguni _ _
Profsn: _ Engineer Lawyer Architect _ _

Step 5: Place E, D, F
Remaining persons: Bina,Amit,Chetan β†’ positions 1, 5, 6.
- Bina is Teacher and NOT adjacent to Divya(pos3): adjacent = pos2,pos4.
Bina not at pos2(taken) or pos4(taken). Remaining: pos1, pos5, pos6. All satisfy adjacency βœ“.
- Chetan sits at an extreme end: pos1 or pos6.
- Amit is NOT at an extreme end: Amit not at pos1 or pos6 β†’ Amit at pos5.
- Chetan at extreme: pos1 or pos6.
- Doctor at pos6. If F=Doctor, F at pos6. Otherwise F at pos1.
After placing D=pos5: remaining Bina and Chetan at pos1 and pos6.
F at extreme β†’ F at pos1 or pos6 (both extreme).
Who is the Doctor (pos6)? Not Divya(doc), Falguni(ban), Eshaan(eng), Amit(remaining profsn), Bina(tea).
Doctor must be Chetan. So Chetan at pos6 = Doctor. Bina at pos1 = Teacher βœ“ (not adjacent to Divya).

Final Arrangement:
Position: 1 2 3 4 5 6
Person: Bina Eshaan Divya Falguni Amit Chetan
Profsn: Teacher Engineer Lawyer Architect ? Doctor

Step 6: Determine Amit's profession
Professions assigned: Lawyer(Divya), Architect(Falguni), Engineer(Eshaan), Teacher(Bina), Doctor(Chetan)
Remaining profession: Banker β†’ Amit is the Banker

Verification:
βœ“ Divya=Doctor at pos 3
βœ“ Engineer(Eshaan) at pos 2
βœ“ Falguni second right of Engineer (pos 4)
βœ“ Banker(Falguni) immediately right of Divya
βœ“ Bina=Teacher at pos 1 (not adjacent to Divya)
βœ“ Lawyer(Chetan) at right extreme (pos 6)
βœ“ Chetan at extreme end (pos 6)
βœ“ Amit not at extreme end (pos 5)

Answer: Amit's profession is Banker.
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