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Six friends P, Q, R, S, T, U sit on a bench. P is next to Q, U is next to T, and R is between S and U. If T is not at either end, who occupies one of the ends?
AR
BT
CU
DP
Answer & Solution
Correct answer: D. P
1. Sequence R between S and U means S-R-U or U-R-S triplet exists.
2. U-T adjacency extends to S-R-U-T or T-U-R-S blocks.
3. P-Q must be adjacent and outside this 4-block.
4. Since T is not at an end, the 4-block sits in the middle and PQ flanks one end; P (or Q) can be at the end. Among options, P is at an end.
_Source: ICAI BoS Foundation Paper 3, Ch 11 'Seating', p.4_
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