Question 1
Eight persons T, O, P, N, Q, M, S and R are sitting around a circular table. Some face the center and some face outward.
T faces the center. O faces outward and sits third to the right of T.
P sits second to the left of T and faces the same direction as O.
N faces the center and sits immediately to the right of P.
M sits immediately to the right of T. R sits opposite T.
S is not adjacent to O.
Who sits second to the right of N?
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 1β8 clockwise)
Step 3: Start with definite information
- Fix T (faces center) at position 1 (reference point)
- O 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 β
Step 4: Apply relative positions
- P 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
P faces same as O β OUTWARD
- N faces center, sits immediately to the RIGHT of P (pos 7):
P faces outward β right = anti-clockwise
1 anti-CW from pos 7 β pos 6
Step 5: Fill remaining persons
- M immediately to the RIGHT of T(pos 1, centerβCW): pos 2
- R opposite T(pos 1): pos 5
- S not adjacent to O(pos 4): adj = pos 3 & 5
β S at pos 8, Q at pos 3
Final Arrangement (clockwise):
pos1:T(ctr) | pos2:M(out) | pos3:Q(ctr) | pos4:O(out) | pos5:R(out) | pos6:N(ctr) | pos7:P(out) | pos8:S(ctr)
Find second to the right of N (pos 6, center-facing β CW):
2 CW from pos 6: β pos 8 = S
Verification:
β O(outward) 3 left of T(center): 3 ACW from pos1 = pos4
β P 2nd left of T, same direction as O (outward)
β N(center) immediately right of P(outward, right=ACW)
β M immediately right (CW) of T
β R opposite T
β S not adjacent to O
Answer: S sits second to the right of N.
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 1β8 clockwise)
Step 3: Start with definite information
- Fix T (faces center) at position 1 (reference point)
- O 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 β
Step 4: Apply relative positions
- P 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
P faces same as O β OUTWARD
- N faces center, sits immediately to the RIGHT of P (pos 7):
P faces outward β right = anti-clockwise
1 anti-CW from pos 7 β pos 6
Step 5: Fill remaining persons
- M immediately to the RIGHT of T(pos 1, centerβCW): pos 2
- R opposite T(pos 1): pos 5
- S not adjacent to O(pos 4): adj = pos 3 & 5
β S at pos 8, Q at pos 3
Final Arrangement (clockwise):
pos1:T(ctr) | pos2:M(out) | pos3:Q(ctr) | pos4:O(out) | pos5:R(out) | pos6:N(ctr) | pos7:P(out) | pos8:S(ctr)
Find second to the right of N (pos 6, center-facing β CW):
2 CW from pos 6: β pos 8 = S
Verification:
β O(outward) 3 left of T(center): 3 ACW from pos1 = pos4
β P 2nd left of T, same direction as O (outward)
β N(center) immediately right of P(outward, right=ACW)
β M immediately right (CW) of T
β R opposite T
β S not adjacent to O
Answer: S sits second to the right of N.