Question

R is a relation from {11, 12, 13} to {8, 10, 12} defined by y = x – 3. Then, R^–1 is

A. {(8, 11), (10, 13)}
B. {(11, 8), (13, 10)}
C. {(10, 13), (8, 11), (8, 11)}
D. none of these

Answer 1

A. {(8, 11), (10, 13)}

{(8, 11), (10, 13)}

According to the question R is a relation from {11, 12, 13} to {8, 10, 12} defined by y = x – 3:

⇒R={(11,8),(13,10)}

⇒R^-1={(8, 11), (10, 13)}