cardinality | MathCelebrity Forum

cardinality

  1. math_celebrity

    The set of months of a year ending with the letters “ber”.

    The set of months of a year ending with the letters “ber”. We build set S below: S = {September, October, November, December} The cardinality of S, denoted |S|, is the number of items in S: |S| = 4
  2. math_celebrity

    D= {a,b,c,d,e,f,g} the cardinality of set D is

    D= {a,b,c,d,e,f,g} the cardinality of set D is Cardinality of D, denoted |D|, is the number of items in the set: |D| = 7
  3. math_celebrity

    A set has a cardinality of 9. How many proper subsets does the set have?

    A set has a cardinality of 9. How many proper subsets does the set have? The set has 2^9 = 512 proper subsets
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