Q. Let $A = \{ 1,\ 2,\ 3\}$ and $B = \{ 2,\ 3,\ 4\}$, then which of the following relations is a function from $A$ to $B$?
A) {(1, 2), (2, 3), (3, 4), (2, 2)}
B) {(1, 2), (2, 3), (1, 3)}
C) {(1, 3), (2, 3), (3, 3)}
D) {(1, 1), (2, 3), (3, 4)}
Explanation
(c)
In the given options only option (c) satisfies the condition of a function.
Hence, option (c) is a function.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.