For the following questions answer them individually
If A is a set such that n(A) = 5, then the number of symmetric relations that can be defined on A is
The function $$f : R \rightarrow R$$ defined by $$f(x) = 3x^2 + 5$$, for all $$x \epsilon R$$, is
If A. B are two sets such that n(A) = 5, n(B) = 6, then the number of surjections that can be defined from A to B is
The equation of the straight line passing through the point (7, -5) with slope $$\frac{-4}{5}$$ is
If a line makes intercepts 5, 12 on X, Y axes respectively, then the length of the perpendicular drawn from the origin to the line is