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The number of ways of arranging 20 boys ...

The number of ways of arranging 20 boys so that 3 particular boys are separated is:

A

`18!-16!3!`

B

`16!^(17)P_(3)`

C

`15!^(16)P_(13)`

D

`17!^(17)P_(3)`

Text Solution

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The correct Answer is:
C
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