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There are 7 women and 5 men in a department. (a) How many ways can a...

There are 7 women and 5 men in a department. (a) How many ways can a committee of 4 people be selected if there must be 2 men and 2 women on the committee? (b) If a committee is formed at random, what is the probability that it is made up of 2 men and 2 women.

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