Solve the following inequations with the help of number line
(i) `(x − 1) (x − 2) ge 0`
(ii) `(x − 2)^3 (x − 3) gt0`
(iii) ` (x − 1) (x −3) (x + 5) gt 0`
(iv) `((x-1)(x-2))/(x-3)le0`