Question

What is the total number of digits required in numbering the pages of a book, which has 105 pages?

Answer 1

207

Explanation:

207 all the way

Answer 2

207

Explanation:

So list out the numbers from digits.

1 digit numbers: 9

2 digit numbers: 90

3 digit numbers: 6

9 * 1 = 9

90 * 2 = 180

3 * 6 = 18

9 + 18 + 180 = 207