Question

Three consecutive natural numbers have a sum of 30 What is the least number?

Answer 1

The least number is `color(green)(9)`

Explanation:

Let the smallest (least) number be `n`

We are told that
`color(white)("XXX")n+(n+1)+(n+2)=30`

`rarr 3n+3=30`

`rarr 3n=27`

`rarr n=9`