Mathematics for IGCSE & O level - Sets (Section 4 - No. 3)

Which statement is correct regarding the cardinality of a set?
Cardinality refers to the sum of all the elements in the set.
Cardinality refers to the number of elements in a set.
Cardinality is a set operation used to combine two sets.
Cardinality refers to the size of a set.

Explanation

Cardinality refers to the number of elements in a set.

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