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The value of the expression (sum(r=0)^1...

The value of the expression `(sum_(r=0)^10 "^10 C_r)(sum_(k=0)^10 (-1)^k (^10 C_k)/2^k)` is :

A

1

B

`2^(5)`

C

`2^(10)`

D

`2^(20)`

Text Solution

Verified by Experts

The correct Answer is:
a
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