First slide

Introduction to Relations (XI) on Sets

Question

Let A= {1,2,3},B=[1,3,5}. If relation R from A to B is given by {(1,3),(2,5),(3,3)}, then R^-1 is

Easy

A

a. {(3,3),3,1),(5,3)}
B

b. {(1,3), (2,5),(3,3)}
C

c. {(1,3),(5,2)}
D

None of these

Solution

(d) We have, R = {(1,3),(2,5),(3,3)}
R^-1{(y, x);(x, y) $\in$ R} = {(3,1),(5,2),(3,3)}

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