T/F) Determine whether 3 is an element of the set: { {3},{3,{3} }, 3}?

Update:

2. How many elements does the power setP({1,{2,3}}) have?

4 Answers

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  • fcas80
    Lv 7
    3 years ago
    Favourite answer

    True, 3 is an element; it's the last element.

  • 3 years ago

    Don't you see it as the last element?

  • ?
    Lv 7
    3 years ago

    yes

  • ?
    Lv 7
    3 years ago

    If a set has 2 elements then its power set has 4 elements.

    Example: the power set of {a,b} has the 4 elements ∅, {a}, {b}, {a,b}.

    The set in your update has 2 elements, so its power set has 4 elements.

    (if a set has n elements then its power set has 2^n elements)

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