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The coefficients of x^(n) in the expansi...

The coefficients of `x^(n)` in the expansion of `(1+x)^(2n) and (1+x)^(2n-1)` are in the ratio

A

`1: 2 `

B

`1: 3 `

C

`3: 1 `

D

`2: 1 `

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The correct Answer is:
D
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