+1 vote
28 views

If $A$ be the set of triangles in a plane and $R^{+}$ be the set of all positive real numbers,  then the function $f\::\:A\rightarrow R^{+},$ defined by $f(x)=$ area of triangle  $x,$ is

1. one-one and into
2. one-one and onto
3. many-one and onto
4. many-one and into

retagged | 28 views

+1 vote

Hence, option$(C)$ is the correct answer.

by Boss (19k points)