Review the counting of arrangements.  When selecting a debit card PIN number 4 digits are required. How many PIN numbers are possible if repetition is allowed? How many PIN numbers are possible if repetition is not allowed?

Q: 5. S dovod ev

A: topic- indefinite integral

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Q: QUESTION 13 O 42 O 26 O 48

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Q: standard

A:

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Q: 2,1 1,25 2,25 3,78

A: Explanation of the solution is given below...