Mathematics, 22.04.2020 03:30 laidbackkiddo412

Kevin has an equal number of dimes, nickel and quarters in his piggy bank. He randomly picks a coin, replaces it, and picks another coin. What is the probability that the sum of the two coins is at least 30cents?

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Kevin has an equal number of dimes, nickel and quarters in his piggy bank. He randomly picks a coin,...