Posted by **Anonymous** on Thursday, December 27, 2012 at 11:26am.

Prove that

mean of squares of first n natural numbers is (n+1)(2n+1)/6

## Answer this Question

## Related Questions

- airthmetic progression - prove that mean of cubes of first n natural numbers is...
- math - The first, the third and the seventh terms of an increasing arithmetic ...
- Maths - 1..The first 2 terms of a geometric progression are the same as the ...
- Math (Geometric Progression) - 5 distinct positive reals form an arithmetic ...
- arithmetic - Two arithmetic progression have thd same first and last terms.the ...
- Math - A sequence is called an arithmetic progression of the rst order if the di...
- Math - 5 distinct positive reals form an arithmetic progression. The 1st, 2nd ...
- math - The third,sixth and seventh terms of a geometric progression(whose common...
- math - There are two positive numbers that can be inserted between 3 and 9 such ...
- Algebra/Number Theory - In a sequence of four positive numbers, the first three ...