A book has pages from 1 to 85. Find the probability that the sum of the digits on the page is 8.
A book has pages numbered from 1 to 85. What is the probability that the sum of the digits on the page is 8, if a page is chosen at random?
A book has pages numbered from 1 to 100. If a page is chosen at random, what is the probability that the sum of the digits on the page is 9?
From a book containing 100 pages, one page is selected randomly. The probability that the sum of the digits of the page number of the selected page is 11, is