SOLUTION: A computer password consists of six characters. The first two must be lowercase letters and the remaining four can be either digits or lowercase letters. How many passwords are t
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Question 435801: A computer password consists of six characters. The first two must be lowercase letters and the remaining four can be either digits or lowercase letters. How many passwords are there which contain no repeated characters? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! How many four-digit numbers less than 6000 can be made using only odd digits?
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left-most digit: 3 ways
all others: 5 ways
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Total numbers: 3*5^3 = 375
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Cheers,
Stan H.
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