Atleast one French member = (1F out of total 3)+(2F out of total 3)+(3F out of total 3)
=(4C1*6C2) + (4C2*6C1) + (4C3)
=4*15 + 6*6 + 4
=60+36+4
=100
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Source: Beat The GMAT — Problem Solving |
You can also solve this question as....
We have to find no of ways containing atleast one french.
We can find no of ways in which no french member is selected and subtract it from total.
10C3 - 6C3
= 100
We have to find no of ways containing atleast one french.
We can find no of ways in which no french member is selected and subtract it from total.
10C3 - 6C3
= 100
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