مشاري راشد العفاسيJul 3, 2026
CARDINALITY
The number of elements in a set is the cardinality of that set.
The cardinality of the set A is often notated as |A| or n(A)
Introduction to Sets - Elements and Subset of a Set | Grade 7 Math
https://www.youtube.com/watch?v=4SWpuzM05Y0&t=440s
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