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The middle term in the expansion of (1+(...

The middle term in the expansion of `(1+(1)/(5))^(20)` is

A

a) `""^(20)C_(10)((1)/(5))^(10)`

B

b) `((1)/(5))^(11)`

C

c) `""^(20)C_(11)((1)/(5))^(11)`

D

d) `""^(20)C_(9)((1)/(5))^(9)`

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