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Thread: Divisibility

  1. December 14th 2008, 09:14 AM #1
    Sea
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    Divisibility

    18\mid a and a\mid 216 \Rightarrow how many a integer?
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  2. December 14th 2008, 09:24 AM #2
    Moo
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    Quote Originally Posted by Sea View Post
    18\mid a and a\mid 216 \Rightarrow how many a integer?
    All multiples of 18 that divide 216.
    Since 216=18*12=18*(1*2*3*4), we can easily list them :
    18, 18*2, 18*3, 18*4, 18*6, 18*12

    It's in fact 18 multiplied with any number dividing 12.
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