Question

What will be the number of digits used in numbering the pages of a book having $199$ pages?

• A. $398$
• B. $489$
• C. $495$
• D. $532$

Answer 1

Answer: (B)

$489$

For one digit number there are 9 digits

For two digit numbers that is (11,12,13........, upto 99) there are $(90\times 2)=180$

For three digits numbers that is (100,101,102,..... upto 199) there are $(100\times 3)=300$

Total numbers used are $9+180+300=489$

Hence, option B is correct.