We need to select

5 boys from 7 boys

And

2 girls from 3 girls

Number of ways

=7C5x3C2

=[(7*6)/(2*1)*3]

=21*3=63

Ans is 63

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In how many ways can a group of 5 boy and 2 girl be made out of a total of 7 boy and 3 girl ?

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