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Math Help - Digits

  1. #1
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    Digits

    you have numbers from 0-9 how many 5 digit even numbers can you make with no numbers repeating. Example 13598, not 11234
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  2. #2
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    There are a couple of things to be careful of with this problem: your first and last digit are restricted - you can not have a 0 leading, and you can not have an odd number trailing. I would do the problem in two parts - calculating the number of 5 digit numbers you can make with an even number trailing (which is the same as calculating the number of 4 digit numbers multiplied by the number of even numbers trailing), and subtract from that amount the number of numbers you get with a leading 0 multiplied by 4 digit numbers (with a even number trailing).

    Use the above and take a crack at it.
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  3. #3
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    Is the answer 12096?
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