1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Which of the following is not an equivalence relation in z?

A
aRb $$ \Leftrightarrow $$ a + b is an even integer
B
aRb $$ \Leftrightarrow $$ a $$-$$ b is an even integer
C
aRb $$ \Leftrightarrow $$ a < b
D
aRb $$ \Leftrightarrow $$ a = b
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