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Given the four digits 2, 4, 6, and 7, how many different positive two-digit integers can be formed using these digits if a digit can be repeated in an integer?

 Apr 2, 2020
 #1
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0

Let's list these out:

 

24   44

26   64

27   67

22   62

42   66

46   76

47   77

74   72

 

So, this gives us a total of 16 ways.

 Apr 2, 2020

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