1) If z is a complex number, then |3z -1| =3 | z -2| represent

2) If the area of the triangle on the complex plane formed by the points z, z + i z and i z is 200 , then the value of | 3 z | must be equal to

3) If the complex number i z , z and z + i z represent the three vertices of a triangle, then the area of the triangle is

4) The least value of a is

5) The least value of b is

6) The least value of c is

7) Which one of the following statement is true ?

8) The product of cube roots of -1 is equal to

9) The quadratic equation in x such that the arithmetic mean of its roots is 5 and geometric mean of the roots is 4, is given by

10) Which of the following is correct?

11) The points representing cube roots of unity

12) Let the two numbers have arithmetic mean 9 and geometric mean 4. Then, these numbers are the roots of the quadratic equation

13) The number which exceeds its positive square roots by 12, is

14) The number of quadratic equations which are unchanged by squaring their roots is