Question

what are real and imagnary numbers

Answer 1

real numbers are a set of rational and irrational numbers.
imaginary numbers are complex numbers .

Answer 2

an imaginary number is the square root of a negative number and does not have tangible value .while it is not a real number that is --- it cannot be quantified on the number line .imaginary numbers are "real" in the sense that there exist are used in math .