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    I am a little confused on how to answer this question. Any help would be welcomed. The question is:

    Let A and B be sets. Prove that (A n B) u (A\B) = A.

    thanks all
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    (Original post by DORI)
    I am a little confused on how to answer this question. Any help would be welcomed. The question is:

    Let A and B be sets. Prove that (A n B) u (A\B) = A.

    thanks all
    The easiest way to see this is to draw a Venn diagram. The try and turn the intuition you get from that into a proof.

    BTW, you'll get quicker answers to maths questions if you post them in the maths forum rather than in the maths courses forum.
 
 
 
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