JEE Main 2026 Mathematics question
A box contains 5 blue, 6 yellow and 4 red balls. The number of ways, of drawing 8 balls containing at least two balls of each colour, is:
Answer: (A)
Solution
Summing C(5,b)C(6,y)C(4,r) over all valid b,y,r≥2 with b+y+r=8 gives 4100.