Solutions to the problems in the Divisibility Handout from last session have been published here. For a list of all past handouts, please visit our archives.

If you find an error in any of the handouts or solutions, or if you have any questions, please let us know at

We will be covering Modular Arithmetic next week, which is a continuation of this topic. If you weren’t able to make it to the Divisibility session, we highly recommend going through the handout to familiarize yourself with the basic concepts of modular arithmetic we introduced. There are also lots of extra problems in the Divisibility handout that are good for extra practice.

We hope to see everyone soon!


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