<PRE><B>Question 735074</B>
We need to create serial numbers that start with one of the letters A, B, C, D, E, or F followed by three non-repeating digits. How many serial numbers can be created
1st letter: 6 ways
1st digit: 10 ways
2nd digit: 9 ways
3rd digit: 8 ways
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Total ways: 6*10*9*8 = 4320 ways
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Cheers,
Stan H.</PRE>