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Re:Are You 1 in 1,000,000? by shin_lao on Sunday August 22, 2010 @04:30PM (#1625205)
Depends.

Do you roll a random number from a generator until it matches the displayed number?

If yes, if you have 1,000,000 visitors per day, the probability of having a winner is around 63 %.

However, if your random number generator guarantees that each player gets a different number then yes, the probability of having a winner approaches 100% as you get closer to the millionth visitor.

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