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Math Help - Not sure how to attack this

  1. #1
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    Not sure how to attack this

    Hi all,


    Given this question and I am lost as to what it means. Any help would be appreciated.



    Let a = 68, b = 33, and n = 3,

    a. Verify that 3 | ( 25 19 ).


    Thanks
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  2. #2
    Moo
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    Hello,

    3 | (25-19) means that 3 divides (25-19), or in other words that 25-19 is a multiple of 3.
    Does this help you go through this question ?
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  3. #3
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    This simply would mean that 6 is a multiple of 3. A statement like 3 | (25-18) would then be incorrect, and would not be written this way.

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  4. #4
    Moo
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    Quote Originally Posted by Joel View Post
    This simply would mean that 6 is a multiple of 3. A statement like 3 | (25-18) would then be incorrect, and would not be written this way.

    Thanks heaps
    That's exactly it !

    In this case, we may write 3\nmid (25-18)
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