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If A and B are co efficients of x^(n) in...

If A and B are co efficients of `x^(n)` in the expasion of `(1+x)^(2n)and(1+x)^(2n-1)` respectively then `(A)/(B)`…………..

A

`(1)/(2)`

B

`(1)/(n)`

C

1

D

2

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