1.

Let n be a positive integer and (1+x)^(n)+C_(0)+C_(1)x+C_(2)x^(2)+C_(3)x^(3)+ . . .+C_(r)x^(r)+ . . .+C_(n-1)x^(n-1)+C_(n)x^(n) Where C_(r) stands for .^(n)C_(r), then Q. The values of underset(r=0)overset(n)(sum)underset(s=0)overset(n)(sum)(C_(r)+C_(S)) is

Answer»

`(N+1)2^(n+1)`
`n.2^(n)`
`(n+1)2^(n)`
`n.2^(n-1)`

ANSWER :A


Discussion

No Comment Found

Related InterviewSolutions