Mathematics, 03.08.2021 19:10, Ron1213

A penny collection contains twelve 1967 pennies, seven 1968 pennies, and eleven 1971 pennies. If you are to pick some pennies without looking at the dates, how many must you pick to be sure of getting at least four pennies from the same year

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A penny collection contains twelve 1967 pennies, seven 1968 pennies, and eleven 1971 pennies. If you...