Hello!
Anyway to solve this one ?
If 1^2+2^2+3^2+....+9^2=285, 3^2+6^2+9^2+12^2+15^2+-27^2=?
(A) 855
(B) 2,565
(C) 7,695
(D) 23,085
(E) 69,255
Source: Unknown
Thanks so much!!![]()
Anyway to solve this one ?
If 1^2+2^2+3^2+....+9^2=285, 3^2+6^2+9^2+12^2+15^2+-27^2=?
(A) 855
(B) 2,565
(C) 7,695
(D) 23,085
(E) 69,255
Source: Unknown
[Reveal] Spoiler:
OA:B
Thanks so much!!