

MCQOPTIONS
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1. |
Let a binary operation ‘*’ be defined on a set A. The operation will be commutative if ________ |
A. | a*b=b*a |
B. | (a*b)*c=a*(b*c) |
C. | (b ο c)*a=(b*a) ο (c*a) |
D. | a*b=a |
Answer» B. | |