If the ratio `(1-z)/(1+z)` is purely imaginary, then

If the ratio (1-z)/(1+z) is pyrely imaginary, then

If the ratio (1-z)/(1+z) is pyrely imaginary, then

If (z-1)/(z+1) is purely imaginary then

If (z-1)/(z+1) is purely imaginary, then |z|=

If the number (z-1)/(z+1) is purely imaginary, then

If z is a complex number such that (z-1)/(z+1) is purely imaginary, then the value of |z| is-

If z is a complex number such that (z-i)/(z-1) is purely imaginary, then the minimum value of |z-(3 + 3i)| is :