Mathematics, 16.03.2020 03:03 bbqchicken243

A bank assigns random 4-digit numbers for ATM access codes. In each code, no digit is repeated.
How many arrangements of 4 digits can be chosen from 10 digits, if order is not important?

Answers: 3

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A bank assigns random 4-digit numbers for ATM access codes. In each code, no digit is repeated.