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Puzzle of the Day

These puzzles are also printed in Eight days a week, a booklet published by the Association of Teachers of Mathematics.The Association of Teachers of Mathematics

The factors of 12 are 1, 2, 3, 4, 6, 12 because they all divide into it . What is the smallest number with three factors? What types of numbers 3have three factors?

Answer: 4, square numbers

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