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Question

If A – B = A, then (AB) = ___.


A

{ }

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B

A

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C

AB

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D

B

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Solution

The correct option is A

{ }


The difference of two sets is the set of elements which belong to 1st set but not the second set.

If A – B = A, then A and B are disjoint sets.

(AB) = { }

There are no elements common to A and B.


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