Given that ( 12 + 22 + 32 + + 102...

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Given that ( 1² + 2² + 3² + .......... + 10² ) = 385, then the value of ( 2² + 4² + 6² + .......... + 20² ) is equal to = ?

A. 770

B. 1155

C. 1540

D. (385)²

Answer: Option C

Solution(By Examveda Team)

( 2² + 4² + 6² + .......... + 20² )
= 2² ( 1² + 2² + 3² + .......... + 10² )
= 4 × 385
= 1540

This Question Belongs to Arithmetic Ability >> Simplification

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Comments ( 1 )

Saif Tahsin :

3 years ago

Maybe there is a mistake in question.

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Given that ( 12 + 22 + 32 + + 102...

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Solution(By Examveda Team)

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Given that ( 1² + 2² + 3² + .......... + 10² ) = 385, then the value of ( 2² + 4² + 6² + .......... + 20² ) is equal to = ?