A printer numbers the pages of a book starting with 1 and uses 3189 digits in all .How many pages does the book have ????
Answer (1)
Student Expert
28th Apr, 2020
hi,
taking Pages 1–9, every page will be a single digit page number , so there is
1*9 = 9 digits
from pages 10-99, 2 digit page number will show, so total of digits is 2*90=180.
from page 100-999, there is three digit page number, so total digit is =3*900=2700.
totals digit used= 2700+180+9= 2889.
so remaining digita= 3189-2889= 300,
now 300/4 for remaining pages comes to 75,
so total page is = 9+90+900+75= 1074.
:)
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