# math.random()

 Type Function Library math.* Return value Number Revision Release 2020.3606 Keywords random, random number See also math.randomseed()

## Overview

Returns a pseudo-random number from a sequence with uniform distribution.

This function is an interface to the simple pseudo-random generator function `rand` provided by ANSI C. No guarantees can be given for its statistical properties.

There are three usage options for this function:

1. When called without arguments, returns a uniform pseudo-random real number in the range `[0,1]`.
2. When called with an integer number `m`, `math.random` returns a uniform pseudo-random integer in the range `[1,m]`.
3. When called with two integer numbers `m` and `n`, `math.random` returns a uniform pseudo-random integer in the range `[m,n]`.
Note

The random number generator needs to be started with a seed using math.randomseed() before this function is called or else it will generate the same sequence every time. While this is useful for testing, it is more usual to get a different random sequence each run by using a different seed (such as the current time).

## Syntax

```math.random()

math.random( m )

math.random( m, n )```
##### m (optional)

Number. A number.

##### n (optional)

Number. A number.

## Examples

```print(math.random())        --> a number between 0 and 1
print(math.random())        --> another number between 0 and 1
print(math.random(10))      --> an integer between 1 and 10 (inclusive)
print(math.random(70, 80))  --> an integer between 70 and 80 (inclusive)```