Question 1

How does a random number generator work?

Accepted Answer

A computer random number generator (RNG) uses a mathematical algorithm called a pseudorandom number generator (PRNG) to produce sequences of numbers that appear random. Most use the current time as a "seed" value. While not truly random (like radioactive decay), PRNGs are statistically random enough for games, simulations, and everyday use.

Question 2

Can I use this to pick lottery numbers?

Accepted Answer

Yes. Set your minimum to 1, maximum to the highest number in your lottery (e.g., 69 for Powerball), generate 5 or 6 unique numbers, and you have a random lottery selection. Remember that all combinations have exactly equal odds -- there is no strategy that improves your chances.

Question 3

What is the difference between random and unique random numbers?

Accepted Answer

Standard random numbers can repeat (like rolling a die twice and getting 4 both times). Unique random numbers (no duplicates) are like drawing cards from a shuffled deck -- once a number is picked, it cannot appear again. Use unique mode when you need a random ordering or selection without repetition.

Question 4

What are the odds of rolling a specific number on a die?

Accepted Answer

For a fair d6 (six-sided die), each face has a 1/6 (about 16.7%) chance. For a d20, each face has a 1/20 (5%) chance. For two d6 dice, the most likely total is 7 (probability 6/36 = 16.7%), and the least likely totals are 2 and 12 (probability 1/36 = 2.8% each).

Random Number Generator

Frequently Asked Questions

Related Calculators