>

### A sample text widget

Etiam pulvinar consectetur dolor sed malesuada. Ut convallis euismod dolor nec pretium. Nunc ut tristique massa.

Nam sodales mi vitae dolor ullamcorper et vulputate enim accumsan. Morbi orci magna, tincidunt vitae molestie nec, molestie at mi. Nulla nulla lorem, suscipit in posuere in, interdum non magna.

Published on December 12th, 2010 In category Education | Maths

Search Similar Topic: , ;

# Natural numbers

What is sum of the first n natural numbersCan you also say the sum of the squares of first n natural numbers? best of all can you calculate the sum of the cubes of the first n natural numbers in a fraction of seconds

Can you also say the sum of the squares of first n natural numbers? best of all can you calculate the sum of the cubes of the first n natural numbers in a fraction of seconds. There questions where earlier asked in MBA and bank probationary examinations. So what is the easy way to solve these problems

Try out these formulas

Sum of first n natural numbers = n = n × (n + 1) / 2

Sum of squares of first n natural numbers n2 = n × (n + 1) × (2n + 1) / 6

Sum of cubes of first n natural numbers = n^3 = [n × (n + 1) / 2]^2

If you liked my contribution, please donate or click on any of advt. a little that will be generated will all be donated for noble cause. [paypal-donation]