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The number of ways in which n things of ...

The number of ways in which n things of which r are alike, can be arranged in a circular order, is

A

`((n-1)!)/(r!)`

B

`(n!)/(r!)`

C

`(n!)/((r-1)!)`

D

`((n-1)!)/((r-1)!)`

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The correct Answer is:
A
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