Question

prove that sum of 3 consecutive natural numbers is divisible by 9

Answer 1

3 consecutive natural numbers.
\(\normalsize\color{blue}{ 1+2+3 }\) for example, I doubt that !

Answer 2

Nope sir!! I can prove the opposite though... just did !

Answer 3

`sum of 3 consecutive number` = `middle number in the sum` × `3`

So if you middle number in the set of 3 consecutive natural numbers is divisible by 3, then the sum is also divisible by 3.

Answer 4

then the sum is divisible by 9 I meant to say