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Five people, P, Q, R, S and T, are sitting in a straight line facing north. Who sits to the immediate right of R? I. Q sits second from one of the extreme ends. Only one person sits between Q and R. S sits third to the right of R. II. S sits to the immediate left of P. Only two people sit between S and T. R sits to the immediate left of T.
Data in statement I alone is sufficient
Data in statement II alone is sufficient
Data in both statements together are sufficient
Data in neither statement is sufficient
Data in both statements together are sufficient
Combine clues from both statements to fix the exact positions of all five people in the linear row.
Combine clues from both statements to fix the exact positions of all five people in the linear row.
Analyze Statement I
Statement I places Q second from an end, relates Q and R, and places S third to the right of R, but leaves ambiguity for the immediate right of R.
Analyze Statement II
Statement II gives adjacency rules for S-P and R-T along with a gap between S and T, but lacks absolute reference points.
Combine Both Statements
Using both statements together allows us to establish a single definitive seating order, proving that T sits to the immediate right of R.
A: Statement I alone leaves multiple candidates for the position next to R. B: Statement II alone lacks absolute boundary constraints to yield a single unique arrangement. D: Incorrect because combining the statements successfully solves the puzzle.
C is correct because data in both statements together are sufficient to determine the exact seating arrangement and identify who sits to the immediate right of R.
In data sufficiency seating puzzles, always test whether individual statements yield multiple valid configurations before combining them.
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