Home JEE Main - Previous Year Papers JEE MAIN 2019 PAPER 9 Let be the set of natural numbers and two f…
JEE Main - Previous Year Papers JEE MAIN 2019 PAPER 9 Single Correct MCQ
Published on: August 13, 2026

Let be the set of natural numbers and two functions and be defined as such that

and . Then fog is:

A
onto but not one-one.
B
one-one but not onto.
C
both one-one and onto.
D
neither one-one nor onto.

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Text Solution

Verified by Experts
The correct answer is:
A

Many one

Onto

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