Six policy advisors (P, Q, R, S, T, U) are seated in a single row of six chairs: P sits at one of the ends; Q sits next to P; R sits between Q and S; T does not sit next to S. Who sits at the other end of the row?
Answer and explanation
Correct answer: A. Advisor T
- Step 1: Put P at seat 1; if P is at seat 6 the same steps apply in mirror image. Step 2. Q is next to P, so Q is at seat 2. Step 3. R is between Q and S, so R is at seat 3 and S is at seat 4. Step 4. Seats 5 and 6 are left for T and U. T cannot sit next to S, and seat 5 is next to S, so T sits at seat 6 and U at seat 5. Step 5. Seat 6 is the end opposite P. Answer: Advisor T. Why not the others: Advisor U is at seat 5; Advisor S is at seat 4; Advisor R is at seat 3.
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