Question

what makes a real number a real number?

Answer 1

simple answer would be not having complex component

Answer 2

i think a simple answer would be that it has to exist on a number line but i dont know if you're looking for something more complex

Answer 3

not to be a wise guy but this is sort of like asking what makes a dog a dog.
you can read about real numbers here
http://en.wikipedia.org/wiki/Real_number

Answer 4

if a number follows the definition of a real number then its a real number
anything in the form a+bi is omplex
a is the real part bi is the imaginary part
so anything in the form a+bi where b=0 is real

Answer 5

omplex lol
complex*

Answer 6

lol, what makes dog a dog?

Answer 7

the definition of a dog

Answer 8

lol

Answer 9

what makes an imran a imran?

Answer 10

your definition of an imram

Answer 11

imran*

Answer 12

a domesticated carnivorous mammal that typically has a long snout, an acute sense of smell, and a barking, howling, or whining voice.

Answer 13

lol