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OpenStudy (anonymous):
A code consists of two letters (they can be repeated) followed by one digit (0-9). The number of possibilities is
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OpenStudy (anonymous):
how many letters in the alphabet?
OpenStudy (anonymous):
26 @satellite73
OpenStudy (anonymous):
ok then you have two letters, 26 choices for each, and one number, 10 choices by the counting principle the total number of ways to do this is \[26\times 26\times 10\]
OpenStudy (anonymous):
6760
OpenStudy (anonymous):
@satellite73
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