ICSE-VIII-Mathematics
23: Probability Class 8 Maths
- #13A 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?Ans : Number of pages of the book = 92
Which are from 1 to 92
Number of possible outcomes = 92
∴ Number of pages whose sum of its page is 9 = 10
i.e. 9, 18, 27, 36, 45, 54, 63, 72, 81, 90
∴ P(E) = 10/92
= 5/46