1 Answered Questions for the topic The Counting Principle

The Counting Principle Math Probability Permutations

12/01/15

I have a math test on the counting principle and permutations but I don't understand this question.
ATM codes: to use an automated teller machine, you generally must enter a four digit code, using the digits 0-9 how many four digit codes are possible if repetition of digits is permitted? The... more
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