Q: What is null set in math?

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An empty set in math is called a null set.

The null set. Every set is a subset of itself and so the null set is a subset of the null set.

A null set is a set with nothing in it. A set containing a null set is still containing a "null set". Therefore it is right to say that the null set is not the same as a set containing only the null set.

There is only one null set. It is 'the' null set. It is a set which does not contain any numbers.

A null set is a set that contains no elements.

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An empty set in math is called a null set.

null set

It is a set that contains no elements - an empty set.

The null set. Every set is a subset of itself and so the null set is a subset of the null set.

A null set is a set with nothing in it. A set containing a null set is still containing a "null set". Therefore it is right to say that the null set is not the same as a set containing only the null set.

There is only one null set. It is 'the' null set. It is a set which does not contain any numbers.

A null set is a set that contains no elements.

There is only one null set. It is 'the' null set. It is a set which does not contain any numbers. It is represented by the symbol ∅.

There is only one null set. It is 'the' null set. It is a set which does not contain any numbers. It is represented by the symbol ∅.

yes

Yes. Union is an operation in which all the members of any two sets are placed in a common set. The union operation can be applied to the null set and any set but since it has no members, it does not change the set the union is taken with. It is rather like adding 0 to a number.

a set which has no elements in it is called a null set. example - A={}.