Question

A committee of 7Has to be formed from 9boys and 4girls in how many ways can this be done when the committee consist almost 3girls

Answer 1

let the 9 boys are B1, B2, B3, B4, B5, B6, B7, B8, B9.
let the four girls are G1, G2, G3, G4.
S = {B1, B2, B3, B4, G1, G2, G3}
S= {B5, B6, B7, B8, G1, G2, G3}
S= {B9, B2, B3, B4, G1, G2, G4}