Two men M, and M, and three women W, W,and W, in a big industrial firm, are trying for promotion to a single post which falls vacant. Those of the same sex have equal probabilities of getting promotion but each man is twice as likely to get the promotion any 3 women. (a) Find the probability that a woman gets the promotion. (b) If M, and W, are husband and wife, find the probability that one of them gets the promotion.

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