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A Book Contains 85 Pages. a Page is Chosen at Random. What is the Probability that the Sum of the Digits on the Page is 8? - ICSE Class 10 - Mathematics

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Question

A book contains 85 pages. A page is chosen at random. What is the probability that the sum of the digits on the page is 8?

Solution

Number of pages in the book =85 

Number of possible outcomes=n(s)=85 

out of 85 pages, pages that sum up to 8= {8,17,26,35,44,53,62,71,80} 

pages that sum up to 8=n(E)=9 

Probability of choosing a page with the sum of digits on the page equal 8=  `(n(E))/(n(s))=9/85`

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Solution A Book Contains 85 Pages. a Page is Chosen at Random. What is the Probability that the Sum of the Digits on the Page is 8? Concept: Simple Problems on Single Events.
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