Question 10
In a book of 100 pages, all the pages with digits that are factors of 5 are torn. How many pages are left now?
Number the pages 1 to 100 inclusive. Remove each numbered page independently if its number contains at least one digit that is a positive factor of 5. Enter one whole number.
Number the pages 1 to 100 inclusive. Remove each numbered page independently if its number contains at least one digit that is a positive factor of 5. Enter one whole number.