Mathematics, 07.03.2020 05:17 michaelmonroe9105

Customer account "numbers" for a certain company consist of 3 letters followed by 3 numbers.
Step 1 of 2: How many different account numbers are possible if repetitions of letters and digits are allowed?
Step 2 of 2: How many different account numbers are possible if repetitions of letters and digits are not allowed?

Answers: 1

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