# MCQs Number System – 4

MCQs Mathematics covers the topic of the Number system for the preparation of Intermediate mathematics.

1. The correct statement of De Mover’s Theorem is $(cos \theta + i\, sin\, \theta)^n$ is equal to

2. Golden rule of fraction is that for $k\ne 0$, $\frac{a}{b} =$

3. If $z_1=2+3i$, $z_2=1-i$ then $|z_1z_2|=$

4. If $|x+5i|=3$ then $x$ is equal to

5. If $z=a+ib$ then $(z^2+\overline{z}^2)$ is equal to

6. The modulus value of a complex number $z=x+iy$ is the distance from

7. Imaginary part of $(-2+3i)^2$ is equal to

8. If a point $A$ of a coordinate plane corresponds to the ordered pair $(a, b)$, then $a$ and $b$ are called

9. If $z$ is a real number then

10. The modulus of $z$ is

11. The set $\{1, -1\}$ possesses closure property w.r.t.

12. Polar form of $(\sqrt{3} + i)$ is

13. Real part of $(x+iy)^n$ is

14. The geometrical plane on which coordinate system has been specified is called

15. If $z=3-5i$ then $|z|^2$ is equal to

16. If $z=x+iy$ then $|z|=? 17. If$R$is the set of real number, then product$R\times R$is called 18. If point$A$of the coordinate plane corresponds to the ordered pair$(a,b)$then 19. Polar form of$1+i\sqrt{3}\$ is

20. 0.1428571428571…. is