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The number of ways in which 10 candidate...

The number of ways in which 10 candidates `A_(1),A_(2),A_(3),.........,A_(10)` can be ranked so that `A_(1)` is always above `A_(10)` is

A

5!

B

2(5!)

C

10!

D

`1/2(10!)`

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The correct Answer is:
D
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