Introduction

Four Fours, the combinatorial maths challenge.

Education Suggestions

Write to the author.

Solutions 0-99

A list of the first 100 answers (solutions 0 to 99) to the Four Fours problem.

Solutions 100+

A list of contributed answers (solutions above 99) to the Four Fours problem - there are some gaps.

Submit a Solution

If you can contribute a solution where we have none, then submit it here!

Resources

Links to other web pages dedicated to the Four Fours problem.

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