Question
A team of 10 is to be formed from 4 girls and 11 boys. How many ways this can be done by taking at most 3 girls in the team?
Answer: Option B
:
B
Case 1- No girls
Possible selections = 11C10=11
Case 2- One girl
Possible selections= 4×11C9=220
Case 3- Two girls
Possible selections =4C2×11C8=990
Case 4- Three girls
Possible selections = 4C3×11C7=1320
Total= 2541
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:
B
Case 1- No girls
Possible selections = 11C10=11
Case 2- One girl
Possible selections= 4×11C9=220
Case 3- Two girls
Possible selections =4C2×11C8=990
Case 4- Three girls
Possible selections = 4C3×11C7=1320
Total= 2541
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