- "Real" random numbers: use a physical source of randomness
- Pseudo-random numbers: deterministic sequence that passes tests of

randomness - Quasi-random numbers: well distributed (low discrepancy) points

to low-discrepancy sequence and has diagrams that point out the difference.

"Real" random numbers are often used in cryptographic applications, and

pseudo-random numbers are used all over the place in simulations and

games.

random.org has a good overview for the other two types:

Characteristic | Pseudo-random | Real-random |
---|---|---|

Efficiency | Excellent | Poor |

Determinism | Deterministic | Non-deterministic |

Periodicity | Periodic | Aperiodic |

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