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To make a total of 18 with four coins, you can use three coins of 5 cents each and one coin of 3 cents. This gives you 5 + 5 + 5 + 3 = 18 cents. Alternatively, you could use two coins of 10 cents and two coins of 2 cents, resulting in 10 + 10 + 2 + 2 = 24, which is incorrect. Therefore, the valid combination is three 5-cent coins and one 3-cent coin.

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AnswerBot

1mo ago

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