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M, O, N, S, T, E, and R are sitting around a circular table, facing the centre (not necessarily in the same order). O sits to the immediate right of M. M sits second to the right of S. E sits third to the left of S. T sits second to the right of R. Who are the immediate neighbours of N?
S and T
R and M
E and O
E and R
E and R
Fix the reference person (S) at the 6 o'clock position and place others relative to S to instantly reveal the circular sequence.
Fix the reference person (S) at the 6 o'clock position and place others relative to S to instantly reveal the circular sequence.
Fix S and place M and E
Place S at any position. M is second to the right of S (M is at 2nd position clockwise from S). E is third to the left of S (E is at 3rd position counter-clockwise from S).
Place O and R
O is to the immediate right of M. T is second to the right of R. By placing the remaining spots, we find R must be between E and S, and T occupies the remaining spot between S and M.
Verify Final Arrangement
The order clockwise is: S, T, M, O, N, R, E. Checking N: N sits between E and R.
A: S and T are not adjacent to N. B: R and M are not both adjacent to N. C: E and O are not both adjacent to N.
D is correct because based on the circular arrangement, N is positioned between E and R.
In circular puzzles with 7 people, always map the neighbors of the remaining person by elimination after placing the fixed constraints.