algebra

Let U=1,2,3,4,5,6,7,8,9,10
{x|x is multiply of 2} U {x is multiply of 7}

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asked by Mary
  1. Translating in English,
    you have defined a universal set of integers from one to ten.
    Then you defined sets (presumably belong to the universal set) which combine ("unioned") to form a new set.
    The first, {x|x is multiple of 2} means the set of even numbers between 1 and 10, namely {2,4,6,8,10} and the second is
    {x|x is multiple of 7} which consists of only one element (between 1 and 10), namely {7}.
    The union of these two sets give
    {2,4,6,7,8,10}.

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    posted by MathMate
  2. MathMate,

    I want to thank you so much in how you explained it. Thank you again and have a nice evening

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    posted by Mary

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