Question

what is mean of null set ? and give tow example of null set?​

Answer 1

In the context of measure theory, a null set is a set of measure zero. The empty set is always a null set, but the other null sets depend on which measure you're using.

Answer 2

Answer:

it is an empty set it is a like a category to which none belongs

Step-by-step explanation:

example is a cow having 5 legs