Question

if Asubset of B then what is A-B​

Answer 1

Step-by-step explanation:

If set A is the subset of set B, it means that all the elements of set A are present in set B. Also A - B means elements of set A which are not present in set B. But as we know all the elements of set A are present in set B, so A-B = { } or in other words an empty set.

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Answer 2

If A is subset of B then all elements present A present in B so A-B is a null set so A-B={}