Question: Serial numbers for a product are to be made using3 letters followed by3 digits. The letters are to be taken from the first9 letters of
Serial numbers for a product are to be made using3
letters followed by3
digits. The letters are to be taken from the first9
letters of the alphabet, with no repeats. The digits are taken from the10
digits0,
1,
2,
...
,
9
, with no repeats. How many serial numbers can be generated?
(If necessary, consult alist of formulas.)
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