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The sum of series ^^(20)C0-^^(20)C1+^^(2...

The sum of series `^^(20)C0-^^(20)C1+^^(20)C2-^^(20)C3++^^(20)C 10` is `1/2` `^^(20)C 10` b. `0` c. `^^(20)C 10` d. `-^^(20)C 10`

A

`.^(20)C_(10)`

B

`1/2.^(20)C_(10)`

C

`0`

D

`.^(20)C_(10)`

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The correct Answer is:
A
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