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JEE Main Mathematics question

MathematicsPermutations and CombinationsJEE Main

At an electron, a voter may vote for any number of candidates not greater than the number to be elected. There are candidates and are to be elected. If a voter votes for at least one candidate, then the number of ways in which he can vote, is

Answer: (B)

Solution

The voter chooses candidates with , in ways. The counts are , , and for

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Question ID VK-020580