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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) inR (iii) (a,b) in R and (b,c) in R implies that (a,c) in R |
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