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how many 4 characters passwords can be created if using 3 letters and 1 digit and repetition is not allowed?​
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how many 4 characters passwords can be created if using 3 letters and 1 digit and repetition is not allowed?​

User Soheilpro
by
7.2k points

1 Answer

1 vote

Answer:

156000

Explanation:

We have 3 letters and the repetition is not allowed and we have 26 letters

26*25*24=15600

And 1 digit that has 10 option

15600*10=156000

User Saurabh Chauhan
by
7.6k points
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