The best coins to use in thinking about the first three whole-number place values in base five would be the penny, the nickel, and the quarter.

Question

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In base five, the first three whole-number place values represent units (5^0 = 1), fives (5^1 = 5), and twenty-fives (5^2 = 25), which correspond to the values of a penny, a nickel, and a quarter in U.S. currency, respectively.

The Best Coins to Use in Thinking About the First