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Math Help - True or False?

  1. #1
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    True or False?

    The cardinality of A = {∅} is one.
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  2. #2
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    Re: True or False?

    true
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  3. #3
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    Re: True or False?

    Yes, of course it is true. Look at it! It contains one thing, ∅.

    Were you mistaking this set for ∅ itself?
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