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In a scientific study there are 8 guinea pigs, 5 of which are pregnant. If 3 are selected at random without replacement, find the probability that all are pregnant.

 Mar 7, 2016
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The probability  is given by:

 

(5/8) (4/7)(3/6)  =

 

60 / 336  =

 

10 / 56  =

 

5 / 28   = about 17.86%

 

 

cool cool cool

 Mar 7, 2016

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