Question

12 balls are distributed among 3 boxes and find probability first box contain 3

Answer 1

Answer:

Step-by-step explanation:

First box will contain 3,it means other two will contain total 9 balls.

no. of ways to contain 9 balls in 2 boxes = (9+2-1)C(2-1) = 10C1 = 10

so, in 10 ways we can put 3 balls in first box.