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(.^(n)C(1))/(2)-(2(.^(n)C(2)))/(3)+(3(.^...

`(.^(n)C_(1))/(2)-(2(.^(n)C_(2)))/(3)+(3(.^(n)C_(3)))/(4)-....+(-1)^(n+1)(n(.^(n)C_(n)))/(n+1)=`

A

`(1)/(n+1)`

B

`(2)/(n+2)`

C

`1-(1)/(n+1)[.^(n+1)C_(1)-.^(n+1)C_(0)]`

D

`(n^(2)-1)/(n+1)`

Text Solution

Verified by Experts

The correct Answer is:
A, C
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