SOLUTION: The company purchased 4 tracts of land in Holly Farms and 6 tracts in Newburg. A) What is the probability that the next two tracts sold will be Newburg? My answer is (6/10)*(5/9

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Question 727841: The company purchased 4 tracts of land in Holly Farms and 6 tracts in Newburg.
A) What is the probability that the next two tracts sold will be Newburg? My answer is (6/10)*(5/9)= 0.333
B) What is the probability that of the next 4 sold at least one will be in Holly Farms? I can't get this part! Help please!

Answer by KMST(5328)   (Show Source): You can put this solution on YOUR website!
I guess we are to assume that all of those tracts are equally likely to sell.
The probability that of the next 4 sold at least one will be in Holly Farms is the probability that not all 4 will be in Newburg.

The probability that all 4 will be in Newburg is (6/10)(5/9)(4/8)(3/7)=1/14=about 0.0714
The probability that not all 4 will be in Newburg is 1-1/14=13/14=about 0.9286

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