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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

What is the minimum number of each coin I need if it is to be possible for me to give any amount of money from 1p to 50p?

Answer: 1p, 2p, 2p, 5p, 10p, 10p, 20p

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