Home
Class 11
MATHS
The value of sum(r=1)^n(-1)^(r+1)("^n C ...

The value of `sum_(r=1)^n(-1)^(r+1)("^n C r)/(r+1)` is equal to a.`-1/(n+1)` b. `1/n` c. `1/(n+1)` d. `n/(n+1)`

Promotional Banner

Similar Questions

Explore conceptually related problems

The value of sum_(x=1)^(n)(-1)^(r+1)(C(n,r))/(r+1) is equal to

The value of Sigma_(r=1)^(n)(-1)^(r+1)(""^(n)C_(r))/(r+1)) is equal to

The value of sum_(r=1)^(10) r. (""^(n)C_(r))/(""^(n)C_(r-1) is equal to

The value sum_(r=1)^(10)r.(n_(C_(r)))/(n_(C_(r-1))) is equal to

The value of sum_(r=1)^(n+1)(sum_(k=1)^(n)C(k,r-1))=

sum_(r=1)^n r (n-r +1) is equal to :

sum_(r=1)^(n)(C(n,r))/(r+2) is equal to