Let and , and define a function by , , . Which of the following correctly describes…

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Let

A=\{1,2,3\}

and

B=\{a,b,c,d\}

, and define a function

f:A\to B

f(1)=a

f(2)=c

f(3)=d

. Which of the following correctly describes

f

? (a)

\text{Onto but not one–one}

(b)

\text{Neither one–one nor onto}

(c)

\text{One–one but not onto}

(d)

\text{Both one–one and onto}