Random Number Generator

Each draw is uniform across the range — every integer equally likely — and independent of previous draws, which is why repeats happen more often than intuition expects (with 23 people, two share a birthday more often than not). Switch to unique mode for raffle-style picks.

Computers generate 'random' numbers deterministically from an internal seed. Browser PRNGs pass statistical tests and are fine for games and sampling; lotteries and cryptography use hardware entropy instead.