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JEE Main Mathematics question

MathematicsPermutations and CombinationsJEE Main

How many different non-digit numbers can be formed from the digits of the number by rearrangement of the digits so that the odd digits occupy even places?

Answer: (C)

Solution

The number has digits: odd digits and even digits ; the even places are exactly four. The odd digits fill the four even places in ways;

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Question ID VK-020625