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.

:)