Q36
Given that ( 12 + 22 + 32 + .......... + 102 ) = 385, then the value of ( 22 + 42 + 62 + .......... + 202 ) is equal to = ?
A.
770
B.
1155
C.
1540
AnswerD.
(385)2
Answer: Option C
Solution
Answer: Option C
Solution:
( 22 + 42 + 62 + .......... + 202 )= 22 ( 12 + 22 + 32 + .......... + 102 )
= 4 × 385
= 1540