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A 5 ltr bucket of water is taken from a swamp. The water contains 75 mosquito larvae. A 200mL flask of water is taken from the bucket for further analysis. What is the probability that the flask contains at least one mosquito larvae?

 Dec 15, 2019
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75 larv / 5000 ml = .0015 l/ml

.0015 larv / ml  x 200 ml = 3 larv  should be in the sample

  out of 200 l arv 3

 3/200

 Dec 15, 2019

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