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Questions  >>  CBSE XII  >>  Math  >>  Relations and Functions
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On the set R{1} a binary operation is defined by ab=a+b+ab for all a,bR{1}. Prove that is commutative as well as associative on R{1}. Find the identity element on if any.


(A)0
(B)1
(C)2
(D)3
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