Question

State which of the following are null or empty set?

The set of odd numbers divisible by $2$

Answer 1

A set that contains no member is called the empty set. It is also called the null set.

It is denoted by $\left\{\right\}$or $\phi$

Given set:

The set of odd numbers divisible by $2$

As we know odd numbers are never divisible by $2$. Thus, the set of odd numbers divisible by $2$ contains no member in the set.

Hence, The set of odd numbers divisible by $2$ is Null or empty set.