Question

If A⊂B and B⊂A then A=B is called
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Answer 1

Answer:

Notes : If ACB and BCA , then A=B, i.e., they are equal sets . Every set is a subset of itself . Null set is a subset of every set

Answer 2

Answer:

They are called equal sets.

All elements of A are in B and vice versa.

hope this helps you