Three numbers are chosen at random from numbers 1 to 20 . The probability that they are consecutive is

The approximate value of $\frac{1}{(2.002)^2}$ is

The equation of plane passing through $(1,0,0)$ and $(0,1,0)$ and making an angle $45^{\circ}$ with the plane $x+y-3=0$ is

The distance of the point $(5,3,-1)$ from the plane passing through points $(2,1,0),(3,-2,4)$ and $(1,-3,3)$ is