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The cardinal number of a set is the number of elements in the set.
Example: the cardinal number of the set {6, prune, 675, biscuit, London} is 5, since the set contains five elements.
If a set contains repeated elements, they should only be counted once.
Example: the cardinal number of the set {6, 7, 3, 4, 4, 7} is 4 (not 6) since the fours and sevens are only counted once.
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How do you find the cardinal number to a set?
Count the number of distinct elements in the set.
What is cordinality of set?
The cardinality of a set is the number of elements in the set.
Can you relate the number of elements of a set to its number of subsets?
If the set has "n" elements, then you can make 2n different subsets. The number of subsets will always be greater than the size of the set, both for finite and for infinite sets.
What is the sum of a set of numbers divided by the number of elements?
the mean or average of the set
How do you find the missing number in a set of numbers where the average is given?
The average of a set of numbers is defined as the sum of those numbers divided by the number of numbers. If the average is given, multiply that by number of items in the set including the missing number. Subtract the sum of given numbers from this quotient and the missing number is revealed.
