Probability question, help

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Run this game ten thousand times

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Approximately what is the probability that you will win?

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Uh, no it wouldn't.

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If you get four heads in a row, you win. If you make the tenth flip without getting four heads in a row, you lose.

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Flipping 4 consecutive heads when you run the experiment 10K times is pretty much certain

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import random
def flip():
..return random.choice(('h','t'))

def flip10():
..out=''
..for a in range(10):
....out += flip()
..return out

def check4(s):
..return 'hhhh' in s

count = 0
for a in xrange(10000):
..if check4(flip10()):
..count += 1

print float (count) / float (10000)

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I realize the ~ that he posted makes him correct, since ~ gives you a margin of error, but no it would not be a solid 100%.

I don't care if you run it one billion times...every single time you flip a coin it's 50/50. That is a fact. Of course the odds are extremely great you'd get 4 heads in a row after enough tests...but it is aboslutely not a 100% certainty.

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