A committee of 7 has to be formed from 9 boys and 4 girls. In how many ways can this be done when the committee consists of: (i) exactly 3 girls ? (ii) atleast 3 girls ? (iii) atmost 3 girls ?

Explanation

(i) The committee consists of e**actly 3 girls.


We have to select 4 boys from 9 boys.

This can be done in
`9_(C_4)`
ways and 3 girls out of 4 girls can be selected in
`4_(C_3)`
ways

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