Question

Which among the following is (are) complex number(s) ?

• A. $\pi$
• B. $0$
• C. $3+2i$
• D. $\sqrt{-7}$

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A $\pi$
B $0$
C $3+2i$
D $\sqrt{-7}$

Every real number is also a complex number as we can express any real number in the form of $a+ib$ where $a,b\in R.$