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Discussion :: Algebra Problems

  1.  (Z,*) is a group with a*b = a+b+1 ∀ a, b ∈Z. The inverse of a is

    2. A.

    0
    B.

    -2
    C.

    a-2
    D.

    -a-2

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    Answer : Option D

    Explanation :

    -a-2

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