Question 1012861
 If have twenty coins, and toss them ten times, what is the probability of getting 10 heads and 10 tails, one time, and three times, out of the ten tosses. 
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P(10 heads and 10 tails in one toss of 20) = 20C10*(1/2)^20
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P(10h and 10t 3 times) = [20C10*(1/2)^20)^3
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Cheers,
Stan H.
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