JEE MAIN - Mathematics (2019 - 12th January Morning Slot - No. 10)
Consider three boxes, each containing, 10 balls labelled 1, 2, … , 10. Suppose one ball is randomly drawn from each of the boxes. Denote by ni, the label of the ball drawn from the ith box, (i = 1, 2, 3). Then, the number of ways in which the balls can be chosen such that n1 < n2 < n3 is :
164
240
82
120
Explanation
Number of ways = 10C3 = 120
Comments (0)
