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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

When asked for the sum of two numbers one person said 23 and the other said 210. They were both wrong because they had correctly done the wrong calculation. What were the numbers and what had each done?

Answer: 30-7 and 30x7 are likely


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