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← CBSE Class 12 PYQ
Relations and Functions
CBSE Class 12 · Mathematics · 13 past questions
Topic
One-one and onto functions
1
Types of relations
1
Bijective functions: theory and proofs
0
Equivalence relations and classes
0
Onto functions and codomain/range
0
Level
Easy
1
Moderate
1
Year
2026
2
2025
4
2024
4
2023
3
2 of 13 ·
show all
Q1
2026
A relation R on set A = {1, 2, 3} defined as R = {(1, 1), (2, 2), (1, 2)} is
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Q2
2026
Show that $f : R \to R$ defined as $f(x) = \dfrac{x}{\sqrt{1 + x^2}}$ is one-one but not onto.
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