SOLUTION: a computer password contains 4 digits followed by 2 letters. Find the number of password possibilities if the first digit cannot be 0 and repetition is permitted.
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Question 190153: a computer password contains 4 digits followed by 2 letters. Find the number of password possibilities if the first digit cannot be 0 and repetition is permitted. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! a computer password contains 4 digits followed by 2 letters. Find the number of password possibilities if the first digit cannot be 0 and repetition is permitted.
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1st digit....9 ways
2nd digit....10 ways
3rd digit....10 ways
4th digit....10 ways
1st letter...26 ways
2nd letter...26 ways
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Total # of ways: 9*10^3*26^2 = 6,084,000 ways
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Cheers,
Stan H.
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