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A complex number z has two parts - a real part and an imaginary part - and is of the form:

z := x + iy

where

x and y are real numbers

i represents √-1, that is i2 = -1.

("x" is the real part, "iy" is the imaginary part)

As x and y are real numbers, they can be any real number including 0.

If x = 0, the resulting complex number z is of the form "iy" and is totally imaginary;

if y = 0, the resulting complex number z is of the form "x" and is totally real.

Thus real numbers are a subset of complex numbers, that is every real number is a complex number, but not every complex number is a real number.
yes

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Q: Is every complex number a real number?
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