Mathematics, 06.10.2019 02:10, razomike88

Kevin has an equal number of dimes, nickels, 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 picked is at least 30 cents?

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Kevin has an equal number of dimes, nickels, and quarters in his piggy bank. he randomly picks a coi...