Solve the following mathematical problems:
Serial numbers for a product are to be made using 2 letters followed by 3 numbers. If the letters are to be taken from the first 8 letters of the alphabet with no repetitions and the numbers are to be taken from the 10 digits (0-9) with no repetitions, how many serial numbers are possible?
Serial numbers for a product are to be made using 2 letters followed by 3 numbers. If the letters are to be taken from the first 8 letters of the alphabet with no repetitions and the numbers are to be taken from the 10 digits (0-9) with no repetitions, how many serial numbers are possible?
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