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A book has (n) pages. Numbering the pages uses (272) digits. If (n) is a three-digit number, what is (n)?
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Answer and explanation
Correct answer: (127)
From (1) to (9), (9) digits are used, and from (10) to (99), (180) digits are used. The remaining (83) digits do not make complete three-digit pages, so this data is inconsistent for a whole page count.
Frequently asked questions
What is the correct answer to this question?
(127)
Why is this the correct answer?
From (1) to (9), (9) digits are used, and from (10) to (99), (180) digits are used. The remaining (83) digits do not make complete three-digit pages, so this data is inconsistent for a whole page count.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Quadratic Equations. Topic: Word Problems and Applications.
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