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In how many different ways 4 children can be selected from 6 boys and 4 girls such that at least one boy is there?

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In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?

posted Aug 3, 2018 by anonymous

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1 Answer

+1 vote

209


Number of ways ==> (6C1 x 4C3) + (6C2 x 4C2) + (6C3 x 4C1) + (6C4)
= (6C1 x 4C1) + (6C2 x 4C2) + (6C3 x 4C1) + (6C2)
= (24 + 90 + 80 + 15)= 209

answer Aug 3, 2018 by Hanifa Mammadov
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