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     EduGorilla 
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    Let A and B be two matrices such that AB = A and BA = B. Which of the following statements are correct?

    1. A2 = A
    2. B2 = B
    3. (AB)2 = AB

    Options :-

    1. 1 and 2 only
    2. 2 and 3 only
    3. 1 and 3 only
    4. 1, 2 and 3
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