Question

which number is not real number​

Answer 1

Answer:

Real numbers can be positive or negative, and include the number zero. They are called real numbers because they are not imaginary, which is a different system of numbers. Imaginary numbers are numbers that cannot be quantified, like the square root of -1.

Answer 2

Answer:

Step-by-step explanation:

2i is a complex number and thus not a real number.

All complex numbers where the imaginary part is different from zero are not real numbers.