One interesting question.

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收藏 2008-06-08

If you are at 0 on a number line, flip a coin, move +2 on heads and -1 on tails, <br/>
what is the probability that it will hit -1?

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2008-6-8 12:31:00

2 questions:

1. flip a coin once or? if not once, its a process

2. is the coin fair, s.t. Pr(head) = Pr(tail) = 1/2?

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2008-6-8 12:43:00

1 Flip a coin as many times as you want. Yes, it is a process.
2 it is a fair coin.

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