" If "Sigma_(n)=210," then "sum n^(2)=

If sum n=210, then sum n^(2)=

If Sigma n = 210 " then " Sigma n^(2) =…….

If sum n=210 , then sum n^2 is equal to:

If sum_(r=1)^(n) r=210, then : sum_(r=1)^(n) r^(2) =

Let a_n be the n^(th) term, of a G.P of postive terms. If Sigma_(n=1)^(100)a_(2n+1)= 200 and Sigma_(n=1)^(100)a_(2n)=100, " then" Sigma_(n=1)^(200)a_(n)

If x Sigma_(n=0)^(oo) (-1)^n " tan "^(2n) " and " y = Sigma_(n=0)^(oo) " cos "^(2n) theta for 0 lt theta lt pi/4 , then :

If sum n=210 then find the value of sum n^(2)