ISI2016-DCG-27

Question

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

• A. one-one and into
• B. one-one and onto
• C. many-one and onto
• D. many-one and into

Answer 1

So, option $C$ is the right answer