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JEE Main Mathematics question

MathematicsPermutations and CombinationsJEE Main

A person goes for an examination in which there are four papers with a maximum of marks from each paper. The number of ways in which one can get marks, is

Answer: (C)

Solution

We count solutions of with ; without the upper bound there are . A variable exceeding (at least ) leaves sum at most for the rest:

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Question ID VK-020663