Wednesday

April 16, 2014

April 16, 2014

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

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

- maths-Arithmetic progression -
**Steve**, Thursday, December 27, 2012 at 12:01pmyou will recall that

n

∑ k^2 = n(n+1)(2n+1)/6

k=1

it's pretty obvious then what the average is

**Related Questions**

Maths - 1..The first 2 terms of a geometric progression are the same as the ...

arithmetic - Two arithmetic progression have thd same first and last terms.the ...

maths - 1) The first term of arithmetic progression is -20 and the sum of it's ...

Math (Geometric Progression) - 5 distinct positive reals form an arithmetic ...

Math - 5 distinct positive reals form an arithmetic progression. The 1st, 2nd ...

Math - A sequence is called an arithmetic progression of the rst order if the di...

Maths - If 9th term of an arithmetic progression is 0, prove that its 29th term ...

airthmetic progression - prove that mean of cubes of first n natural numbers is...

Maths - Arithmetic Progression - The fourth term of an AP is 8 and the sum of ...

arithmetic - Each term of a progression is determined by adding 0.5 to the ...