Respuesta :

Because empty set has no element which automatically make it a subset of every set. 

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Answer with Step-by-step explanation:

Suppose a set B.

We have to describe why for any set B, empty set would be a subset of it.

Empty set : It is that set which contain no element.

It is represented as [tex]\phi[/tex] or {}.

When an empty set contain no element then empty set would be be a subset of any set .

If a set B={1,2}

Then , empty set [tex]\phi[/tex] will be  a subset of B.

Hence, empty set would be a subset of any set B.

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