From 7 boys and 5 girls, 6 are to be selected for admission for a particular course. In how many ways can this be done if there must be exactly 3 girls?
Created: 6 years ago |
Updated: 2 years ago
best des
Ways of selecting 3 girls out of 5 = 5C3 = 10
Number of boys to be selected = 6 - 3 = 3
Ways of selecting 3 boys out of 7 = 7C3 = 35
So, total ways = 10 x 35 = 350
Md Azizur Rahman
Founder of Satt
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