Divisibility Puzzles

Stefan Hollos and J. Richard Hollos

Format and pricing: Paperback 8.5 x 11 inch (133 pages) $12.95, pdf $9.95
ISBN: 9798193350453
Publication date: August 2026

These divisibility puzzles will exercise your basic arithmetic and logic skills. There are 120 puzzles in the book, with solutions in the back. Recommended for ages 5 to 105.

Each puzzle in this book is a list of 9 numbers. Each number has a missing digit and one of its divisors is given. The goal is to determine the missing digits. Every digit 1 through 9 will occur among the missing digits exactly once.