Problem 44227. Divisible by 21

Created by Said BOUREZG
Appears in Algorithm I

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Write a function to determine if a number is divisible by 21.

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Last Solution submitted on Feb 23, 2025

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Jean-Marie Sainthillier on 30 May 2017

A lot of why ...

goc3 on 31 May 2017

The problem maker in this case (no pun intended) simply copied the test case from my Divisible by 7 problem and made some edits, but obviously not enough to make it solvable. I've greatly simplified the test suite for this problem so that it is now solvable.

Jean-Marie Sainthillier on 1 Jun 2017

Thanks Grant.

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Problem 44227. Divisible by 21

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Problem 44227. Divisible by 21

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