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I came acr...
2 years ago
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Bret Wyman
1 Answer
GCSE / National 5 Maths, Edexcel, AQA, SQA. Qualified Head of Maths
3 reviews
Big question! In short, it's a theorem suggested by Fermat, but since proved, that every positive integer can be written as the sum (add) of 3 (or fewer) triangle number, 4 (or fewer) square numbers, 5 (or fewer) pentagonal numbers etc, relating to the number of sides.
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