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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.

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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