In a certain animal population, for each of the first 3 : Quant Question Archive [LOCKED]
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# In a certain animal population, for each of the first 3

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In a certain animal population, for each of the first 3 [#permalink]

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06 Nov 2004, 13:24
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

In a certain animal population, for each of the first 3 months of life, the probability that an animal will die during that month is 1/10. For a group of 200 newborn members of the population, approximately how many would be expected to survive the first 3 months of life?

A) 140

B) 146

C) 152

D) 162

E) 170

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06 Nov 2004, 13:31
B) less than 1 min.
200 * (9/10)^3 = approx 146
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06 Nov 2004, 13:32
This is a nice question.

http://www.gmatclub.com/phpbb/viewtopic ... ht=newborn

and

http://www.gmatclub.com/phpbb/viewtopic ... ht=newborn
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510 on my first GMAT. 610 on second GMAT.!
The struggle continues.

06 Nov 2004, 13:32
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