Question

empty sets is denoted by which sets​

Answer 1

Answer:

In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero.[1][2] Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theories, its existence can be deduced. Many possible properties of sets are vacuously true for the empty set.

Step-by-step explanation:

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Answer 2

Answer:

Empty sets is denoted by ɸ or { }