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Mathematics 11 Online
OpenStudy (anonymous):

AA2 A company label its product with a three-character code. Each code consists of two letters (not necessarily different) from the 26 letters of the English alphabet, followed by one digit, as shown above. What is the total number of such codes that are available for labeling the company's product?

OpenStudy (anonymous):

26*26*10 because the repetition is allowed

OpenStudy (anonymous):

where does the 10 come from?

OpenStudy (anonymous):

the digits count from 0,1,2,....9

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