Seven boys A, B, C, P, Q, R and S are sitting around a circular table facing…
2021
Seven boys A, B, C, P, Q, R and S are sitting around a circular table facing towards the centre (not necessarily in the same order). S is second to the left of C. P is second to the left of S. Q is not the immediate neighbour of P or S. B is fourth to the right of A. Which of the following statement is correct?
- A.
B is second to the right of Q.
- B.
P is third to the left of C.
- C.
A is not the immediate neighbour of P or Q.
- D.
B is the immediate neighbour of S and C.
Attempted by 9 students.
Show answer & explanation
Correct answer: D
1. Establish the circle: Facing the centre means 'left' is clockwise and 'right' is anti-clockwise. Let's trace positions (1 to 7) in a clockwise direction.
2. Place initial boys: Assume C is at position 1. S is second to the left, so S is at 3. P is second to the left of S, so P is at 5. (Positions: 1-C, 3-S, 5-P).
3. Place Q: Q is not a neighbour of S(3) or P(5), meaning Q cannot be at 2, 4, or 6. Thus, Q must be at position 7.
4. Place A, B, and R: B is fourth to the right of A. Testing the empty spots (2, 4, 6) for A, only placing A at 6 allows B to be placed at 2 (fourth to the right/anti-clockwise). R takes the last spot at 4.
5. The final clockwise sequence is C, B, S, R, P, A, Q. Analyzing the options with this sequence shows only Option D is correct as B is exactly between C and S.
Final Answer: Option D