Question

What is the sum of first n natural numbers?

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Answer 1

Answer:

+ n = n(n+1) / 2, for n a natural number. There is a simple applet showing the essence of the inductive proof of this result. To run this applet, you first enter the number n you wish to have illustrated; space limitations require 0<n<11.

Answer 2

n² is the sum of first n natural no.s.

for example - sum of 1st 6 natural no.s

=> 1+2+3+4+5+6 = 6² = 36

I hope this answer helps you.