Question

1
Which of the following is not an equivalence relation on Z?
OaRb -> a+b is an even integer
OaRb + a-b is an evern integer
OaRb - a<b
OaRb - a=b​

Answer 1

Step-by-step explanation:

the answer is OaRb - a=b

this above relation is not an equivalence relation because if a=b , then it is only reflexive and neither symmetric nor transitive