(2^2+4^2+6^2+.....+10^2)=?
Select the correct option:
A) 220  B) 440  C) 660  D) 880  E) 990
=(1x2)^2+(2x2)^2,+(2x3)^3+......(2x5)^2   =2^2 x (1^2+2^2+3^2+.......+5^2)   formula is =1/6 n(n+1)(2n+1)   =(4x1/6x5x6x11)   =(4x55)=220   220nswer is 220
<result>A</result>
(2^2+4^2+6^2+.....+10^2)=?