Answers

2016-04-12T21:29:30+05:30
this is in the form of
⇒ 1² + 2² + 3 ² ........ n²

 ⇒    equation is  n(n+1)(2n+1)/6

Hope it's help u
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2016-04-13T08:23:19+05:30
1² + 2² + 3 ² ........ n² 
The sum of squares of n natural number = 
 \frac{n(n+1)(2n+1)}{6}
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