Irrational numbers cannot be written as a fraction. The types of irrational numbers that should be known are: Square roots (of numbers that are not square) e. g. √2, √5, √3.65, etc.

Rational numbers, which make up the majority of numbers we use in day-to-day life (although less than half of all possible numbers), can be written in the form of one whole number divided by ...

Rational numbers, which make up the majority of numbers we use in day-to-day life (although less than half of all possible numbers), can be written in the form of one whole number divided by another.

However, rather than proving pi is irrational directly, it's also possible to confirm irrationality using a different property of the number.

The golden ratio doesn’t arise only in geometry; in the Fibonacci sequence, where each number is the sum of the two previous ones (1, 1, 2, 3, 5, 8, 13, 21, 34, …), the ratios between ...

Such a triangle has a fixed aspect ratio a ⁄ c. If both a and c are rational numbers, the lengths of the sides of the triangle can be chosen so that a and c each correspond to the smallest ...