**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