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Puzzle for Today

Puzzle No. 200 – Monday 9 April

Sophie paints a different positive number on each face of a cube, so that the sum of the numbers on each pair of adjacent faces is a multiple of six. What is the smallest possible sum of all six numbers?

Today’s #PuzzleForToday has been set by Daniel Griller: mathematics teacher, olympiad problem composer, and author of the puzzle book Elastic Numbers.

The answer will be available for a week.

Click here for the answer

108. This is achieved with the six numbers 3,9,15,21,27,33.

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