Numbers Systems Quiz

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Mathematics → Numbers Systems Quiz

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6. The product of complex numbers (4,3) and (5,−6) is ?
(A) (18,3)
(B) (18,−3)
(C) (38,9)
(D) (38,−9)

7. (2,6) ÷ (4,2) = ?
(A) (1,1)
(B) (1,2)
(C) (2,1)
(D) (2,2)

8. (−i)−19 = ?
(A) 1
(B) −1
(C) i
(D) −i

9. The multiplicative identity of a complex number is ?
(A) (0,0)
(B) (1,0)
(C) (0,1)
(D) (1,1)

10. \sqrt{-9}\times\sqrt{-9}=?
(A) 9
(B) −9
(C) 9i
(D) −9i

ANSWERS: ALGEBRA QUIZ
6. D
7. A
8. D
9. B
10. B