The sum of first n natural numbers is given by the expression n2/2 + n

1.	The sum of first n natural numbers is given by the expression n2/2 + n/2. Factorise this expression.
Answer» We have, the sum of first n natural numbers = n²/2 + n/2 Factorasation of given expression = 1/2 (n² + n) = 1/2n(n + 1)

The sum of first n natural numbers is given by the expression n2/2 + n/2. Factorise this expression.

Answer»

We have, the sum of first n natural numbers

= n²/2 + n/2

Factorasation of given expression = 1/2 (n² + n) = 1/2n(n + 1)