Mathematics, 26.06.2019 20:40 hinsri

Cathy has a nickel, a dime, and a quarter in her purse. she randomly picks a coin, replaces it, and then picks another coin. the probability that the two coins are of different denominations is

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Cathy has a nickel, a dime, and a quarter in her purse. she randomly picks a coin, replaces it, and...