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Dang, I'm out of milk. Oh milk, why hast thou forsaken me?
Comment #49753 by Mothra on June 13, 2007 at 8:44 am
Skeptical Chymist:
"Re the dice problem of rolling 20 sixes in a row: Since there are six possible outcomes of each roll and we assume that all six outcomes are equally likely, on average it will take three rolls to come up with a six."
No! On average it will take six rolls to come up with a six. Otherwise we might conclude that on average it takes one toss of a coin to get it to land heads. (An experiment is convincing.)