Question 746487
"Determine how many different computer passwords are possible if the given number of digits (0-9) and the letters (A-Z) can be repeated and cannot be repeated."
If it's not "case sensitive," ie, if A = a, then there are 26 letters.
5 digits followed by 2 letters
Repeated: = 10*10*10*10*10*26*26
= 67600000
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Not repeated: = 10*9*8*7*6*26*25
You can multiply that.