It's like squaring

Algebra Level 2

1, 2,2,3,3,3,............10

Find the sum of the sequence above.


The answer is 385.

Kis Toper by Kis Toper , 27, Philippines

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2 solutions

Ramiel To-ong
Jan 11, 2016

use Fox formula

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Kay Xspre
Oct 18, 2015

Many people reported this question and appears to be tricked by it, or the question may have been edited. It may be written in the form of − 16 + ∑ x = 1 10 x 2 = − 16 + 385 = 369 -16+\sum_{x=1}^{10}x^2 = -16+385 = 369

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