Find value of x
(11^2 + 12^2 + 13^2 + ... + 20^2) = x	Choose the correct option
A) 1200  B) 1340  C) 1234  D) 1203  E) 2485

Rationale: ( 11 ^ 2 + 12 ^ 2 + 13 ^ 2 + . . . + 20 ^ 2 ) = ( 1 ^ 2 + 2 ^ 2 + 3 ^ 2 + . . . + 20 ^ 2 ) - ( 1 ^ 2 + 2 ^ 2 + 3 ^ 2 + . . . + 10 ^ 2 ) 6 = 20 x 21 x 41 - 10 x 11 x 21 6 6 = ( 2870 - 385 ) = 2485 e
Answer: E