1.2 · Sets and Venn diagramsLesson 1 of 13Free preview
Sets, elements and set notation
A set is a list with a clear rule. The symbol ∈ means "is an element of", and n(A) counts the elements.
1.2 · Sets and Venn diagramsLesson 1 of 13Free preview
A set is a list with a clear rule. The symbol ∈ means "is an element of", and n(A) counts the elements.