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  • 20-06-2018
  • Mathematics
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Find A ∩ B if A = {4, 7, 10, 13, 17} and B = {3, 5, 7, 9}.

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altavistard
altavistard altavistard
  • 20-06-2018
The "intersection" of two sets is the set of all members of the 2 sets that are in common.  3 and 4 are not in common here; 7 is; all the rest are not in common.  Thus

A ∩ B = {7}
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