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
There are 5 mangoes and 6 bananas. In how many different ways can a selection of fruits be made if all fruits of same kind are numbered with different tags.
There are 3 boys and 4 girls. We have to arrange any 1 boy at the center and any 2 girls at corners. In how many methods these persons can be arranged.