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Re: one probability question
Quote:
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Originally Posted by dsaqwert
in consequtive 7 days, every day has two possibility, either it rains or not, so 7 days have 2^7 different scenarios in terms of rainy days. and in seven days there is 7c5 different ways that only 5 days is rainy
so 7c5/2^7
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It is pretty clear now. 
_ _ _ _ SIG _ _ _ _
"Fear less,hope more; whine less,breathe more;
Talk less,work more; hate less,love more;
Then all the good things are yours ."
---Proverb---
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