Mathematics
A book contains 92 pages. A page is chosen at random. What is the probability that the sum of the digits in the page number is 9 ?
Probability
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Answer
Total number of possible outcomes = 92
Number of favourable outcomes (Getting a page where the sum of the digits in the page number is 9) = 10 (9, 18, 27, 36, 45, 54, 63, 72, 81, 90)
P(Getting a page where the sum of the digits in the page number is 9) =
=
=
Hence, the probability of getting a page where the sum of the digits in the page number is 9 is .
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