* is said to be commutative in A for all a,b ? A

MCQOPTIONS

1.	* is said to be commutative in A for all a,b ? A
A.	A + b = b + a
B.	A * b = b * a
C.	A - b = b - a
D.	A * b ? b * a
Answer» B. A * b = b * a

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