Data sufficiency for determining immediate neighbors in circular seating
Question
Six persons A, B, C, D, E and F are sitting equidistant from each other around a circular table (facing the centre of the table). Question: Who is sitting on the immediate left of A? Statement-1: B is sitting opposite to C and D is sitting opposite to E. Statement-2: F is sitting on the immediate left of B.
Options
Statement-1 alone is sufficient to answer the Question
Statement-2 alone is sufficient to answer the Question
Both Statement-1 and Statement-2 are sufficient to answer the Question
Both Statement-1 and Statement-2 are not sufficient to answer the Question
Explanation
Evaluate the circular arrangement using 6 numbered slots (1 to 6 clockwise).
Statement 1 provides opposite pairs: (B, C) and (D, E). Since there are 6 seats, the remaining pair (A, F) must also sit opposite each other. However, this yields no specific left/right positioning. Insufficient.
Statement 2 states F is immediate left of B. Insufficient.
Combine both statements: Assume B is at Position 1. Since F is immediately left of B (facing center), F sits at Position 2. From Statement 1, C is opposite B, so C sits at Position 4. A is opposite F, so A sits at Position 5. This leaves Positions 3 and 6 open for the opposite pair (D, E).
We do not know whether D is at 3 and E is at 6, or vice-versa. The question asks: Who is on the immediate left of A (Position 5)? The seat to the left of 5 is Position 6. Because Position 6 could be occupied by either D or E, we cannot definitively answer the question.
Answer: (d).
Question details
Year
2022
Paper
CSAT
Question
Q48
Section
Data Interpretation & Sufficiency
Sub-topic
Seating Arrangement
Type
Factual single
Difficulty
Medium
Source hint
Who is sitting on the immediate left of A?
See all questions on Seating Arrangement
Browse every tagged question across all years