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The coefficient of x^(6) in: [(1+x)^(6...

The coefficient of `x^(6)` in:
`[(1+x)^(6)+(1+x)^(7)+ . . .+(1+x)^(15)]` is:

A

`16 C_(5)-6 C_(5) `

B

`16 C_(6)-1 `

C

`16 C_(9) `

D

`16 C_(9)-I `

Text Solution

Verified by Experts

The correct Answer is:
C
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