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There are 30 pens with six colors and the number of each..
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27 Dec 2015, 05:38
27 Dec 2015, 05:38
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100% (01:08) correct
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I'am struggling with this probability problem.
There are 30 pen with six colors and the number of each color pen is same. What is the least number of pens selected, surely 5 same color pens are selected
The answer is : 25
Apart from solving the question, I don't exactly understand the meaning of the question.
There are 30 pen with six colors and the number of each color pen is same. What is the least number of pens selected, surely 5 same color pens are selected
The answer is : 25
Apart from solving the question, I don't exactly understand the meaning of the question.
Re: There are 30 pens with six colors and the number of each..
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04 Jan 2016, 08:52
04 Jan 2016, 08:52
1
Expert Reply
maverickjin8 wrote:
I'am struggling with this probability problem.
There are 30 pen with six colors and the number of each color pen is same. What is the least number of pens selected, surely 5 same color pens are selected
The answer is : 25
Apart from solving the question, I don't exactly understand the meaning of the question.
There are 30 pen with six colors and the number of each color pen is same. What is the least number of pens selected, surely 5 same color pens are selected
The answer is : 25
Apart from solving the question, I don't exactly understand the meaning of the question.
Here we 30 pens and 6 colors. Hence there are 5 pens per color. Now the worst case scenario is we pick 4 pens from each color ie 24 pens and still not have 5 pens of a single color.
Hence the number of pens to be selected for 5 pens of one color is 24+1 = 25.
gmatclubot
Re: There are 30 pens with six colors and the number of each.. [#permalink]
04 Jan 2016, 08:52
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