Which of the following is an equivalence relation on R, for a, b Z? – McqOptions

MCQOPTIONS

1.	Which of the following is an equivalence relation on R, for a, b Z?
A.	(a-b) Z
B.	(a<sup>2</sup>+c) Z
C.	(ab+cd)/2 Z
D.	(2c<sup>3</sup>)/3 Z
Answer» C. (ab+cd)/2 Z

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