Math, asked by medasani2005, 1 month ago

n articles are arranged in such a way that 2 particular articles never come together. The number of such arrangements is a) (n-2) In-1 b) (n-1) n-2 c) n d) none of these

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Answered by Alekh339

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N articles are arranged in such a way that 2 particular articles never come together. The number of such arrangements is

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