SOLUTION: How many 3-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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Question 1195700
:
How many 3-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?
Answer by
ikleyn(52778)
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(a)
= 17576. (b) 26*25*24 = 15600.
Solved.
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