Number System

The set of counting numbers starting

The set of counting numbers starting from 1: {1, 2, 3, 4, ...}. These are the numbers we use for counting objects in our daily life. Natural numbers a

The set of natural numbers plus

The set of natural numbers plus zero: {0, 1, 2, 3, 4, ...}. Whole numbers include zero and all natural numbers. They are denoted by the symbol W.

The set of all whole numbers

The set of all whole numbers and their negatives: {..., -3, -2, -1, 0, 1, 2, 3, ...}. Integers include positive integers, negative integers, and zero.

A number 'p' is rational if

A number 'p' is rational if it can be written in the form p/q, where p and q are integers and q ≠ 0. Rational numbers include integers (since any inte

A number 's' is irrational if

A number 's' is irrational if it cannot be written in the form p/q, where p and q are integers and q ≠ 0. These numbers have non-terminating, non-repe