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Mathematics, 05.12.2020 01:30 dugg5361
50 points How many 4-digit decimal numbers have at least a 7, an 8, and an 9? Not an 8,9, or 7, the 4 digit number must contain all 3 in it's digits.
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50 points How many 4-digit decimal numbers have at least a 7, an 8, and an 9? Not an 8,9, or 7, the...
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