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JEE MATHEMATICS MCQ: PERMUTATIONS

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Application +4 | -1

The number of ways in which

n

things of which

r

are alike, can be arranged in a circular order, is

View answer and explanation

Correct option: A

\frac{(n-1) !}{r !}

Option A (

\frac{{(n-1) !}}{{r !}}

) is correct because it accounts for the circular arrangement and the identical objects.

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