First slide
Relations XII
Question

If R be a relation < from A=1, 2, 3, 4 to B=1, 3, 5 i.e., a, bRa<b, then 

RoR-1 is

Easy
Solution

We have, R=1, 3; 1, 5; 2, 3; 2, 5; 3, 5; 4, 5

R-1=1, 3; 5, 1; 3, 2; 5, 2; 5, 3; 5, 4

Hence RoR-1=3, 3; 3, 5; 5, 3; 5, 5.

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