MATH

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Find A n B if A={5, 10, 15, 20} and B={10, 2O, 25, 30}

THAT N IS AN UPSIDEDOWN U, DON'T KNOW WHAT THAT MEANS

  • MATH -

    http://www.solving-math-problems.com/math-symbols-set-intersection.html

    It means intersection
    which elements are in both sets? (overlap)
    5 no
    10 yes
    15 no
    20 yes
    25 no
    30 no
    so
    { 10,20}

  • MATH -

    The "upside down U" stands for intersection.
    It means that you are looking for all elements which are common to both A and B
    A ∩ B = {10,20)

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