SOLUTION: A password to a computer account is to consist of 3 lower-case letters followed by four digits. How many different passwords are possible if repetition of letters and numbers is n

SOLUTION: A password to a computer account is to consist of 3 lower-case letters followed by four digits. How many different passwords are possible if repetition of letters and numbers is n

Algebra.Com

Question 747847: A password to a computer account is to consist of 3 lower-case letters followed by four digits. How many different passwords are possible if repetition of letters and numbers is not permitted.
Answer by FrankM(1040) (Show Source): You can put this solution on YOUR website!
If repeats were permitted,
26^3*10^4
But, as you note, no repeats, so
26*25*24*10*9*8*7 or 78,624,000 combinations.
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