Question
The total number of digits used in numbering the pages of a book having 366 pages is
A. 792
B. 1098
C. 730
D. 990
Answer: D
Solution:
Total number of digits = (No. of digits in 1-digit page nos. + No. of digits in 2-digit page nos. + No. of digits in 3-digit page nos.)
= (1 x 9 + 2 x 90 + 3 x 267)
= (9 + 180 + 801)
= 990