Question

The digit 3 appears 87 times in the page numbers of a book .how many pages does the book have?

Answer 1

Answer:

323 pages

Step-by-step explanation:

The number '3' occurs 3 times from 1-29.

From 30-39, the number '3' occurs 11 times.

From 40-99 the number '3' occurs 6 times.

Therefore, the number '3' occurs 20 times in a 100.

So up to 299, the number '3' occurs 60 times.

From 300 to 323, the number '3' occurs 17 times.

Therefore, up to 323 pages, the number '3' occurs 87 times