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How many possible different numbers?

Mathematics
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All the employees of ABC Company are assigned ID numbers. The ID number consists of the first letter of an employees first name, the first letter of their last name followed by three numbers. How many possible different ID numbers begin with A?

Apr 4th, 2015

there are 26 letter for the last name and 3P10 = 10*9*8=720 for 3 numbers , total is 26*720 = 18720

Apr 4th, 2015

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Apr 4th, 2015
Dec 9th, 2016
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