Question

is a real number a complex number always sometimes or never true

Answer 1

http://intermath.coe.uga.edu/dictnary/images/number/venn.gif

Answer 2

Well, real number is subset of complex number.

Basically complex number can be written as \(a+bi\), where a and b are real number.

Real numbers are complex number where \(b=0\).

Answer 3

So I would risk going with "always"

Answer 4

@Anonimouse

"A Complex Number is a combination of a Real Number and an Imaginary Number"

What if Imaginary Number is like \(0i = 0\)? So that can make real number complex number.

Answer 5

A Complex Number is a combination of a Real Number and an Imaginary Number ... so all Real Numbers and Imaginary Numbers are also Complex Numbers.
so, yes, all Real Numbers are also Complex Numbers