Answer :

Given that, A = {1, 2, 3, 4, 5} and R = {(a, b) : |a2 – b2| < 8}


Let us check the relation for a=1,b=2


|12 – 22| = |-3|= 3 < 8


(1,2) R


Similarly, we can check for all the ordered pairs of (a,b) which satisfies the relation.


Hence, R = {(1,1),(1,2),(2,1),(2,2),(2,3),(3,2),(3,3),(3,4),(4,3),


(4,4),(5,5)}


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