Probability Questions!?

2017-03-11 1:21 pm
In a paper box, there are 10 black and 7 green pens of brand X, and 9 black and 12 green pens of brand Y. If six pens are taken at random from the box. Find the probability when at least 5 pens of brand X are taken, given that half of the pens are black and half of the pens are blue.
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In a paper box, there are 10 black and 7 green pens of brand X, and 9 black and 12 green pens of brand Y. If six pens are taken at random from the box. Find the probability when at least 5 pens of brand X are taken, given that half of the pens are black and half of the pens are green.

回答 (1)

2017-03-11 2:21 pm
P=0
There are no blue pens to choose, only black pens and green pens.


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