What are irrational, rational, and natural numbers?

A rational number is a number that can be written as a ratio. That means it can be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers.Every whole number is a rational number, because any whole number can be written as a fraction. For example, 4 can be written as 4/1, 65 can be written as 65/1, and 3,867 can be written as 3,867/1.
All numbers that are not rational are considered irrational. An irrational number can be written as a decimal, but not as a fraction.

An irrational number has endless non-repeating digits to the right of the decimal point.
Although irrational numbers are not often used in daily life, they do exist on the number line. In fact, between 0 and 1 on the number line, there are an infinite number of irrational numbers!

yea, it's an answer idiot

Am i the only one using this in 2021?

This dude just copy and pasted his whole answer. That's plagiarism, at least change it up a bit.

?bot

To determine if a number is rational or irrational, you can follow these steps:

1. When given a number, check if it can be written as a fraction. If it can, then it is a rational number. For example, 0.5 can be written as 1/2, so it is a rational number.

2. If the number cannot be written as a fraction, then it is necessary to check if it has an endless non-repeating decimal expansion. If it does, then it is an irrational number. For example, √2 is approximately 1.41421356..., and the decimal digits continue without repeating, so it is an irrational number.

3. If the number neither satisfies the criteria for being rational nor irrational, then it falls into a different category, such as a complex number or an imaginary number.

When it comes to natural numbers, they are also known as counting numbers and start from 1 and continue infinitely. So, the natural numbers are 1, 2, 3, 4, 5, and so on. Natural numbers are a subset of rational numbers since every natural number can be written as a fraction with a denominator of 1.

To summarize:
- Rational numbers can be written as fractions, where both the numerator and denominator are whole numbers.
- Irrational numbers cannot be written as fractions and have endless non-repeating decimal expansions.
- Natural numbers are the positive integers starting from 1, and they are a subset of rational numbers.