Mathematics

8th -

9thgrade

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Set Theory

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  • 1. Multiple Choice
    2 minutes
    1 pt

    If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∩ B?

    {3, 5, 7}

    {2, 3, 5, 7}

    {2, 3, 5, 7, 9}

    {1, 2, 3, 5, 7, 9}

  • 2. Multiple Choice
    1 minute
    1 pt

    What does this symbol ( ∪ ) represent in set theory?

    Union

    Intersection

    Disjointed

    Subset

  • 3. Multiple Choice
    2 minutes
    1 pt
    If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∪ B?
    {3, 5, 7}
    {2, 3, 5, 7}
    {2, 3, 5, 7, 9}
    {1, 2, 3, 5, 7, 9}
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