. A printer number the pages of a book starting with 1 and uses 3189 digits in all. How many pages does the book have


1. 1000

2. 1079

3. 1078

4. 1074

Best Answer

Ans: 4

Sol: Number of digits from 1 to 9 = 9

Number of digits from 10 to 99 = 90 × 2 = 180

Number of digits from 100 to 999 = 900 × 3 = 2700

and Number of digits from to 1074 = 75 × 4 = 300

Hence, total number of digits from 1 to 1074 = 9 + 180 + 2700 + 300 = 3189

Hence, the book have 1074 pages.

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