1.

underset(r=1)overset(n)Sigma (underset(m=1)overset(r )Sigma m)=……

Answer»

`(N(n+1) (2n+1))/(6)`
`(n(n+1)(n+2))/(6)`
`(n^(2) (n+1)^(2))/(4)`
`(n(n+1)(2n+1))/(12)`

Answer :B


Discussion

No Comment Found