# Real number?

There are two words REAL AND NUMBER.we all of us know that there are various types of numbers like. 0.1.2.3

-1.-2.-3

0.1,0.2,0.3

Roots.

Etc.

But what is the significance of word REAL.

That means if real word exist that means there should be another words that is called IMAGINARY.

square root of 2 is real number.

But square root of(-2)is imaginary number.

And .

Real+imaginary=complex number.

In class 10 you Will read only about only real number like 123,-1.-2.-3,0.1,0.2,root of 2

Imaginary number are like root of -2.they are denoted by (i) and square of i is -1.

I hope you are satisfied