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  1. Practice
  2. Databases
  3. Relational Algebra
  4. Basics of Sets and Relations #3
  5. Discussions

Basics of Sets and Relations #3

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  • rahul_gaikwad + 0 comments

    Number of elements in Only in A, except for anything in its overlap with B

  • brian_reink + 0 comments

    pls specify we can´t use '{}' caracters. Thanks.

  • pratheeban + 0 comments

    A-B = A- (AnB)

  • ajocelynpatrick + 0 comments

    A\B = Intersection of A and Not B

    All elements in A that is not in B

  • vijayasrich + 0 comments
    The number of elements in A-B = 1

    The element in A-B is {1}

  • sidharthdas268 + 0 comments

    A-B = {1} So number of elements preasent in the set is 1

  • LessIsMore + 1 comment

    count how many are in A and B and subtract to get the answer..

    • st528 + 1 comment

      When A-B is given, We need to find the number of values in A which are not present in B. This leaves us with A-B={1} -

      If the question would have been B-A, then B-A ={8}

      Given Set A = {1,2,3,4,5,6} Set B = {2,3,4,5,6,7,8}

      • antoniro + 0 comments

        you forgot '7' in your B-A calculation:

        B-A = {7,8}

  • Fe510NR + 0 comments

    Maybe Chrome does not display correctly

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