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Discrete Structures

  1. Sep 4, 2005 #1
    How many elements are in a sub1 intersect a sub 2 which equals a null set

    when a sub 1 =12 and a sub2 = 18
  2. jcsd
  3. Sep 4, 2005 #2
    what ....is it sub1 INTERSECT (sub2=null set)?
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