Mathematics for IGCSE & O level - Sets (Section 2 - No. 36)

Which of the following is the correct way to represent 'x is not an element of set A'?

x ∈ A

x ∉ A

A ⊆ x

A ⊇ x

Açıklama

The symbol '∉' is used to represent 'is not an element of'.

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