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