Q.3. 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?
There are 9 boys and 4 girls. A committee of 7 has to be formed.
Given : Girls =3, so boys in committee= 7-3=4
Thus, the required number of ways
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