There are 7 boys in a class of 20. Find the number of way...
There are 7 boys in a class of 20. Find the number of ways of selecting 3 girls and 2 boys
1638
2730
6006
7520
Correct answer is C
No of boys in the class = 7; Girls = 20-7 = 13
No of selection = 13C3×7C2=13!(13−3)!3!×7!(7−2)!2!
= 286×21=6006
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