Aptitude : : Complex Number Questions & Answers

  1. Evaluate the expression $(3 + 2\text{i}) - (8 - 5\text{i})$

A. -5 + 7i

B. 7 + 5i

C. -7 - 5i

D. -5 - 7i

  1. Evaluate the expression $ ( 4 - 2\text{i} ) * ( 1 - 5\text{i} )$

A. -6 - 22i

B. 6 + 22i

C. 22 - 6i

D. 6 - 22i

  1. Find i2012 = ?

A. i

B. -1

C. 1

D. 0

  1. Simplify the given expression i5

A. 0

B. 1

C. -1

D. i

  1. Evaluate the expression $\dfrac{-2-4\text{i}}{\text{i}} $

A. -4 + 2i

B. 4 + 2i

C. 4 - 2i

D. -4 - 2i