NCERT Exercise 6.4 Q5 - Permutations and Combinations

Question: From 6 red, 5 white and 5 blue balls, select 9 balls with exactly 3 of each colour.

Answer: ⁶C₃·⁵C₃·⁵C₃ = 2000 selections.

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