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in Reasoning by (72.3k points)

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

(1) 398 

(2) 489 

(3) 495 

(4) 532

1 Answer

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Best answer

Correct option: (2) 489

Explanation:

Page (1–9) – 9 no × 1 dig. = 9 dig.

Page (10–99) – 90 no × 2 dig. = 180 dig.

Page (100–199) – 100 no × 3 dig. = 300 dig.

Total = 9 + 180 + 300

= 489 dig.

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