if (1/(n+1)) ^nCn+(1/n)^nC(n-1)+....+(1/...

if `(1/(n+1)) ^nC_n+(1/n)^nC(n-1)+....+(1/2)^nC_1 + ^nC_0=(1023)/(10)` then n is equal to

A

`8`

B

`6`

C

`7`

D

`9`

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