Question

Empty set us subset if every set. How to prove it?

Answer 1

Here is your answer....

An empty set (null set) is a set which has no elements.

It is denoted by {} or Greek letter 'phi'.

The set A is a subset of the set B if and only if every element of A is also an element of B.

If A is the empty set then A has no elements and so all of its elements (there are none) belong to B no matter what set B we also dealing with....

Thus an empty set is a sub set of every set.

I hope its help you....