Question

A book contains 90 pages. A page is chosen at random. Find the probability that the sum of the digits of page number chosen is 8

Answer 1

All the numbers whose sum of digits is 8 are 8, 17, 26, 35, 44, 53, 62, 71, 80

These are 9 numbers.

So, we have 9 pages.

Total pages=90

Probability=Favourable outcome/total outcome

=9/90

=1/10