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The number of ways in which candidat...

The number of ways in which candidates `A_1,A_2 ,. . . A_(10)` can be ranked if `A_1 ` is always above `A_2 ` is

A

10!

B

9!

C

`1/2 9!`

D

`1/2 10!`

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1A (PERMUTATIONS )
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