NCERT Example 21 - Permutations and Combinations

Question: From 4 girls and 7 boys, form a 5-member team: (i) no girl, (ii) at least one girl and one boy, (iii) at least three girls.

Answer: (i) 21; (ii) 441; (iii) 91.

Full step-by-step NCERT solution with diagrams on Something by Zero.