Mathematics, 30.07.2020 21:01 avaleasim

Mei Su had 80 coins. She gave most of them to her friends in such a way that each of her friends got at least one coin and no two of her friends got the same number of coins. What is the largest number of friends to whom Mei Su could have given coins?

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Mei Su had 80 coins. She gave most of them to her friends in such a way that each of her friends got...