how many numerals are written when numbering a book of 225 pages

Mathematics · Middle School · Tue Nov 03 2020

Answered on

We have to find number of numerals used when numbering a book of 225 pages.

we know,

1 - 9 = 9 digits

10 - 99 = 180 digits

100 - 999 = 2700 digits (3 digits per page)

For 225 page book :

= 9 + 180 + 126(3) 

= 9 + 180 + 378

= 567

 

Hence, 567 numerals are written when numbering a book of 225 pages.