Join 60,000+ competitive exam aspirants
D, E, F, G, L, M and N are sitting around a circular table facing the centre. Only one person sits between F and G when counted from the right of F. Only one person sits between G and D when counted from right of G. Only one person sits between F and L when counted from left of F. Only two people sit between E and D when counted from left of D. Only one person sits between N and L when counted from right of N. Who sits to the immediate right and left of M, respectively?
N and E
E and N
D and E
F and L
N and E
Fix the reference point F, map its right/left neighbors based on given constraints, and use the remaining positions to identify the neighbors of M.
Fix the reference point F, map its right/left neighbors based on given constraints, and use the remaining positions to identify the neighbors of M.
Establish the Circular Arrangement
Let there be 7 positions in a circle. Placing F at position 1. (1) F to G (right) = 1 person: G is at 3. (2) G to D (right) = 1 person: D is at 5. (3) F to L (left) = 1 person: L is at 6. (4) E to D (left, i.e., clockwise) = 2 people: E is at 2. (5) N to L (right) = 1 person: N is at 4.
Locate M and Verify Neighbors
The positions filled are 1:F, 2:E, 3:G, 4:N, 5:D, 6:L. Only position 7 is left, which must be M. The sequence is 1:F, 2:E, 3:G, 4:N, 5:D, 6:L, 7:M. Counting positions in order, M's neighbors are L (to the immediate right, index 6) and F (to the immediate left, index 1).
Re-evaluating the Question
The question asks who sits to the immediate right and left of M. M is at 7, L is at 6 (right), and F is at 1 (left). Wait, check rotation: Clockwise (Right): 1:F, 2:E, 3:G, 4:N, 5:D, 6:L, 7:M. Immediate right of M is F (counter-clockwise/left) or L? In a center-facing circle, right is counter-clockwise. So, looking at center: 7's right is 1 (F) and 7's left is 6 (L). Thus, F and L.
A: N and E are not adjacent to M, B: E and N are not adjacent to M, C: D and E are not adjacent to M.
D is correct because based on the circular placement (F, E, G, N, D, L, M), the persons sitting to the immediate right and left of M are F and L respectively.
Always draw a circle and number positions 1 to N to avoid confusion with 'left' and 'right' in clockwise/anticlockwise directions.