In a book of 1000 pages it is found that there are 200 typing errors. Assume that Poisson law holds for the number of errors per page. Then the probability that a random sample of 5 pages will contain no error is
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In a book of 1000 pages it is found that there are 200 typing errors. Assume that Poisson law holds for the number of errors per page. Then the probability that a random sample of 5 pages will contain no error is