# Rnd function

Returns a **Single** containing a pseudo-random number.

## Syntax

**Rnd** [ (*Number*) ]

The optional *Number* argument is a Single or any valid numeric expression.

## Return values

If Number is |
Rnd generates |
---|---|

Less than zero | The same number every time, using Number as the seed. |

Greater than zero | The next number in the pseudo-random sequence. |

Equal to zero | The most recently generated number. |

Not supplied | The next number in the pseudo-random sequence. |

## Remarks

The **Rnd** function returns a value less than 1 but greater than or equal to zero.

The value of *Number* determines how **Rnd** generates a pseudo-random number:

For any given initial seed, the same number sequence is generated because each successive call to the

**Rnd**function uses the previous number as a seed for the next number in the sequence.Before calling

**Rnd**, use the**Randomize**statement without an argument to initialize the random-number generator with a seed based on the system timer.

To produce random integers in a given range, use this formula:

```
Int((upperbound - lowerbound + 1) * Rnd + lowerbound)
```

Here, *upperbound* is the highest number in the range, and *lowerbound* is the lowest number in the range.

Note

To repeat sequences of random numbers, call **Rnd** with a negative argument immediately before using **Randomize** with a numeric argument. Using **Randomize** with the same value for *Number* does not repeat the previous sequence.

## Example

This example uses the **Rnd** function to generate a random integer value from 1 to 6.

```
Dim MyValue As Integer
MyValue = Int((6 * Rnd) + 1) ' Generate random value between 1 and 6.
```

## See also

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