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1/4P(x=4) = 3/36P(x=8) = 5/36P(x=12) = 1/36P(4 U 6 U 12) = P(4) + P(8) + P(12) = 9/36 = 1/4
3 dollar coins, 4 dimes, 3 nickels, 4 pennies.
4*9 = 36 coins.
You will make 55 cents with 12 coins by using 5 pennies, 3 dimes, and 4 nickels.5 pennies, 3 dimes, and 4 nickels will make 55 cents with 12 coins.
You will use 4 pennies, 2 nickles, and 2 dimes to make 34 cents with 8 coins.