Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Relations and Functions

Question:

Let functions $f:\{1,3,4\} →\{1,2,5\}$ and $g:\{1,2,5\} → \{1,3\}$ be defined as $f=\{(1,2),(3,5),(4,1)\}$ and $g = \{(1,3),(2,3),(5,1)\}$ respectively. Then, which one of the following is correct statement for gof?

Options:

gof is one-one

gof is onto

gof is both one-one and onto

gof is not defined

Correct Answer:

gof is onto

Explanation:

The correct answer is Option (2) → gof is onto