A. A relation R on a set A is called an equivalence relation, if it is reflexive, symmetric and transitive.
B. The function f:R→R defined by f(x)=ex is not one-one.
C. The one-one function is also known as injective function.
D. The onto function is also known as subjective function.
E. A function f:X→Y is said to be many-one, if two or more than two elements in set X have the different image in set Y.
Choose the correct answer from the option given below:
Held on 10 Aug 2022 · Verified 13 Jul 2026.
A, C, D only
B, C, D only
C, D, E only
B, D, E only
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