Question

IF ΣN=55 then Σn^2=

Answer 1

\[\sum n*n=\sum n_p\sum n_q\]

Answer 2

1(55) + 2(55) + 3(55) + ... + 55(55) = 55(1+2+3+...+55)

Answer 3

that seems to be 56/2 * 55^2

Answer 4

im sure i read that incorrectly tho

Answer 5

n(1+n)/2 = 55

n+n^2 = 1010

n=10 i beleve

Answer 6

but the answer is 385

Answer 7

i get 385 as well

Answer 8

1^2 + 2^2 + 3^2 + ...+10^2 = 385

Answer 9

my first idea was just a misreading of the problem ...