Question

The set of all triangle having four sides. It s a singleton set or null set

Answer 1

GIVEN :

The set of all triangle having four sides. It's a singleton set or null set

TO FIND :

The set of all triangle having four sides. It's a singleton set or null set

SOLUTION :

Given the set of all triangle having four sides.

Now we have to check whether it is a singleton set or null set

Let A be the given set

A = {The set of all triangles having four sides}.

We know that every triangle has only three sides

Hence the given set A does not satisfying the triangle property.

ie., it is not possible to have elements in set A

If set A is a singleton set means there must be one element in A

But in the set A there is no elements.

If a set having no  elements means it is said to be null set or empty set.

Hence the set A is null set.

The set of all triangle having four sides. It is a null set

Answer 2

Answer:

it is a null set

maybe it will help