SOLUTION: employee identification codes at a company contains 2 letters followed by 2 numbers. all codes are equally likely. find the possible identificaion codes.
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-> SOLUTION: employee identification codes at a company contains 2 letters followed by 2 numbers. all codes are equally likely. find the possible identificaion codes.
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Question 332451: employee identification codes at a company contains 2 letters followed by 2 numbers. all codes are equally likely. find the possible identificaion codes. Found 2 solutions by rfer, jrfrunner:Answer by rfer(16322) (Show Source):
You can put this solution on YOUR website! The answer depends on a couple of things
-The language used
-Whether replication is allowed or not
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Lets assume we are talking about the English language, there are 26 possible letters.
And of course we'll assume we are talking about the numbers 0 thru 9
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With replication
2 letters followed by 2 number: 26*26*10*10 = 67600 codes
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without replication
2 letters followed by 2 number: 26*25*10*9 = 58500 codes
There are 26 choices for the first letter, afterwards there are 25 choices for the second letter, since no replication is allowed.
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