SOLUTION: a password consists of 2 letters and 2 digits (0-9). The letters and digits CANNOT be repeated. How many passwords are possible?
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Question 233542: a password consists of 2 letters and 2 digits (0-9). The letters and digits CANNOT be repeated. How many passwords are possible? Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! Number of letters and numbers that can be used multiplied by each other times the number of permutations (arrangements) of the four.
26*25*9*8*(4!/(4-4)!)=1,123,200
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Ed
