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Mathematics, 22.03.2020 20:24 ConstanceBhoo301
Serial numbers for a product are to be made using 2 letters followed by 4 digits. The letters are to be taken from the first 7 letters of the alphabet, with no repeats. The digits are taken from the 10 digits (0, 1, 2, ..., 9), with no repeats. How many serial numbers can be generated?
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