1.

C_3//4+C_5//6+C_7//8+….=

Answer»

`((2^(n+1)-n^2-n -2))/(2(n+1))`
`((2^(n+2)+n^2 +n-2))/(n+1)`
`((3^(n+2)-n^2 -n-2))/(n+1)`
none

Answer :A


Discussion

No Comment Found

Related InterviewSolutions