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Sunday Math

Ghost
sundaymath.com· irregular· Inactive for over a year

Sunday Math is a newsletter from Dr. Johnson that poses logic and math puzzles, such as a river-crossing problem, a light-bulb and switch riddle, and a number-equation challenge. The current issue announces a break, with the series expected to resume in the fall.

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Platform
Ghost
Frequency
Irregular
Latest issue
Oct 11, 2017
Language
English
Written for
Puzzle fans and students who enjoy math challenges
Tone
practical
Tracked since
Oct 25, 2026

Website: https://www.sundaymath.com/