## Number System | Binary | Hexadecimal | Roman | Fractions

Types of Numbers Natural numbers (ℕ) The counting numbers {1, 2, 3, …}, are called natural numbers. They include all the counting numbers i.e. from 1 to infinity. Whole numbers (w) They are the natural numbers including zero. Not all whole numbers are natural numbers, but all natural numbers are whole numbers. Integers (Z) Positive and negative counting numbers, as well as zero. Rational numbers (Q) Numbers that can be expressed as a fraction of an integer and a non-zero…