3 years ago

Using 5 letters followed by 2 digits, how many passwords are possible?

1 answer:

6 0

Since there is no condition whatsoever for this arrangement, I can consider the 2 digits and the 5 letters as 7 different objects.

Total permutation (with no repetition):
7 chosen among 7 , that is 7 ! = 5040 arrangements

Total permutation (WITH REPERTITION):

7⁷ = 823 543

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Using 5 letters followed by 2 digits, how many passwords are possible?