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Find the probability of selecting exactly 2 children when four persons are choosen at random from a group of 3 men, 2 woman and 4 children.

9/29
10/21
12/21
14/19

Correct Answer: 10/21

Explanation:

4 persons can be selected from 9 in $9 C 4$ ways =126

Fvaourable events = $4 C 2 * 5 C 2$ =60

So,required probability = 60/126 = 10/21

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