AlicR6813 AlicR6813

15-05-2023
Mathematics

contestada

A zip-code is any 5-digit number, where each digit is an integer 0 through 9. For example, 92122 and 00877 are both zip-codes. How many zip-codes have all different digits? e.g. 91032, 39148, 23091 (You may use a calculator. Give the exact number. No justification necessary.)

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