Q)
Let R be a relation from Q to Q defined by R = {(a,b): a,b $ \in $ Q and a – b $ \in $ Z}. Show that \[\] (i) (a,a) $ \in $ R for all a $ \in $ Q (ii) (a,b) $ \in $ R implies that (b, a) $ \in $ R
(iii) (a,b) $ \in $ R and (b,c) $ \in $ R implies that (a,c) $ \in $ R
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