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Re: one probability question
Quote:
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Originally Posted by dsaqwert
On any day in April in a certain city, the probability of rain is 50%. What is the probability of that it rains exactly 5 days during a 7 day period in April? answer= 7c5/2^7
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Can u give an explaination, dsaqwert?
_ _ _ _ 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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