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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

A.

1638

B.

2730

C.

6006

D.

7520

Correct answer is C

No of boys in the class = 7; Girls = 20-7 = 13

No of selection = 13C3×7C2=13!(133)!3!×7!(72)!2!

= 286×21=6006