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Q1.
If a binary operation is defined ab=ab then 22 is equal to:
Q2.
Show that on Z+ defined by ab=|ab| is not a binary operation.
Q3.
The binary operation on R is defined by ab=2a+b. Find (23)4.
Q4.
If be the binary operation on the set Z of all integers defined by ab=(a+3b2), find 24.
Q5.
Let be a binary operation on N, defined by ab=ab for all a,b,N. Show that is neither commutative nor associative.

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