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# function
Instead of providing a seed, which will be used to seed our [Mersenne Twister](https://en.wikipedia.org/wiki/Mersenne_twister),
you can also specify an arbitrary function to generate random numbers which the
rest of the library will utilize when generating everything else.
A rather simple example, simply using Math.random() instead of our Mersenne Twister
```js
// Use Math.random() instead of our Mersenne Twister
var chance = new Chance(Math.random);
chance.address()
=> '131 Asmun Pike'
chance.address()
=> '261 Pawnaf Highway'
```
Chance will appear to work just the same, but have a different underlying random
generator.
This function should return any number between 0 and 1.
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