Question

Given a natural number `n` that is three times greater than the sum of its digits. Prove that `n` is divisible by `27`.

Difficulty level (1 very easy - 10 very hard): 2

Number Theory -> Modular Arithmetic / Remainder Arithmetic -> Divisibility Rules -> Divisibility Rules by 3 and 9 Proof and Example

There are no comments yet.

You must log in to post a comment.