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URGENT PLEASE HELP How many 4-letter passords can be made using the letters A thought Z if... a) Repetition of letters is allowed? b) Repetition of letters is not allowed?

URGENT PLEASE HELP How many 4-letter passords can be made using the letters A thought Z if... a) Repetition of letters is allowed? b) Repetition of letters is not allowed?
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URGENT PLEASE HELP

How many 4-letter passords can be made using the letters A thought Z if...
a) Repetition of letters is allowed?

b) Repetition of letters is not allowed?

asked
User OldCurmudgeon
by
8.6k points

1 Answer

3 votes

a) The answer will be 456976 because you multiply 26 and 4.

b) The answer will be 358800 bacause you multiply 26*25*24*23

answered
User ItechDroid
by
7.6k points
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