Let $x$ denote the total number of one-one functions from a set $A$ with $3$ elements to a set $B$ with $5$ elements and $y$ denote the total number of one-one functions from the set $A$ to the set $A \times B$. Then …… .

If $f(x) = \log \frac{{1 + x}}{{1 – x}}$, then $f(x)$ is

The range of the function $f(x) = \frac{{\sqrt {1 – {x^2}} }}{{1 + \left| x \right|}}$ is 

Which of the following function is even function

Function ${\sin ^{ – 1}}\sqrt x $ is defined in the interval