JEE Main 2019 Mathematics question

MathematicsPermutations and CombinationsJEE Main 2019

Consider three boxes, each containing 10 balls labelled 1, 2, …, 10. Suppose one ball is randomly drawn from each of the boxes. Denote by , 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 is:

Answer: (D)

Solution

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Question ID VK-010377