Consider the four functions f1, f2, f3 and f4 as follows Choose the correct option.

Question

Consider the four functions f1, f2, f3 and f4 as follows

Choose the correct option. (A) f1 and f2 are onto (B) f2 and f4 are onto (C) f2 and f3 are onto (D) f3 and f4 are onto

Tardigrade Admin · Accepted Answer

The function f3 and f4 in (iii), (iv) are onto and the function f1 in (i) is not onto as elementse, f in X2 are not the image of any element in X1 under f1. Similarly, f2 is not onto.

Q. Consider the four functions $f_{1}, f_{2}, f_{3}$ and $f_{4}$ as follows

Choose the correct option.

$f_{1}$ and $f_{2}$ are onto

$f_{2}$ and $f_{4}$ are onto

$f_{2}$ and $f_{3}$ are onto

$f_{3}$ and $f_{4}$ are onto

The function $f_{3}$ and $f_{4}$ in (iii), (iv) are onto and the function $f_{1}$ in (i) is not onto as elementse, $f$ in $X_{2}$ are not the image of any element in $X_{1}$ under $f_{1}$ . Similarly, $f_{2}$ is not onto.

Q. Consider the four functions f1​,f2​,f3​ and f4​ as follows Choose the correct option.

f1​ and f2​ are onto

f2​ and f4​ are onto

f2​ and f3​ are onto

f3​ and f4​ are onto