Question

Seven students, Q, R, S, T, W, X and Y, are sitting in a straight line facing north. W sits to the immediate right of S. Only three people sit between T and W. No one sits to the right of Q. Only two people sit between Q and S. Y sits to the immediate right of X. How many people sit between R and Y?

• A. One
• B. Four
• C. Three
• D. Two

Answer 1

Answer:

D. Two

Two people sit between R and Y.

1. Position Q: "No one sits to the right of Q" means Q is at the extreme right end (Position 7).

2. Position S: "Only two people sit between Q and S" places S at Position 4.

3. Position W: "W sits to the immediate right of S" places W at Position 5.

4. Position T: "Only three people sit between T and W" means T must be at Position 1.

5. Positions X and Y: "Y sits to the immediate right of X" means they need two adjacent empty seats. The only available spots side-by-side are 2 and 3, making X Position 2 and Y Position 3.

6. Position R: The only remaining person, R, takes Position 6.

Final Arrangement:

Position 1 Position 2 Position 3 Position 4 Position 5 Position 6 Position 7

T X Y S W R Q

Between R (Position 6) and Y (Position 3), there are exactly 2 people (S and W).