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There are 15 boys and 10 girl in your class.A four member committee is to be formed from the student of your class. in how many ways this can be done if

the committee consists at least three girls


There will be two cases.
In first 3 girls and 1 boy, number of ways = 10C3× 15C1 = 1800 ways
In second case, 4 girls  and 0 boys,
number of ways = 10C4 =210
so total number of possible ways = 1800 + 210 = 2010
0 0 0
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