Number System

1. Real Numbers

1.1. Rational Numbers

1.1.1. Fractions 1/2 , 4/8 etc

1.1.2. Integers

1.1.2.1. 0 : Zero

1.1.2.2. Negative Numbers -1, -2, -3 etc

1.1.2.3. Positive Numbers 4, 3, 2, 21 etc

1.1.2.3.1. Natural Numbers 1, 2, 3, 4.....etc

1.1.2.3.2. Whole Numbers 0, 1,2,3,4.....etc

1.1.3. Decimals ( either terminating or not terminating but repeating) 1.222222...., 2.1234 etc

1.2. Irrational Numbers

1.2.1. Decimal form (non terminating and not repeating). 0.756342.... , 3.2416785... ect

2. Imaginary Numbers

2.1. a + ib , x +iy , i 2 , i 1/3 etc