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OpenStudy (anonymous):
Suppose you are an engineer programming the automatic gate for a 30-cent toll. The gate should accept exact change only. It should not accept pennies. How many coin combinations must you program the gate to accept?
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OpenStudy (anonymous):
5 combos all nickels all dimes 2 dimes 2 nickel 1 dime 4 nickels 1 quarter and 1 nickel
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