Six arms negotiators-M, O, P, R, S and T- are to be seated at a round table to discuss disarmament. There are exactly six chairs around the table. Each negotiator sits facing the centre of the table and is directly opposite a negotiator across the table. The seating arrangement is subject to the following restrictions:

T cannot sit next to P.

S cannot sit next to M.

R must sit next to M.


If T sits directly across the table from O, who must sit on either side of P?

  1. a.

    O and R

  2. b.

    O and S

  3. c.

    R and T

  4. d.

    M and O

  5. e.

    M and S

Answer: b





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