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The number of ways in which 20 different...

The number of ways in which 20 different pearls of two colours can be set alternately on a necklace, there being 10 pearls of each colour, is

A

`9!xx10!`

B

`5(9!)^(2)`

C

`(9!)^(2)`

D

`(10!)^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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