Find the number of digits printed on a book having 392 pages such that the digits are only used to indicate the page number of the book.

Question

Find the number of digits printed on a book having 392 pages such that the digits are only used to indicate the page number of the book.
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Solution 1

Sure, here is the step by step solution:

  1. First, we need to find out how many digits are used for each set of pages.

  2. For pages 1 to 9, we have 9 pages and each page number has 1 digit. So, we have 9*1 = 9 digits.

  3. For pages 10 to 99, we have 90 pages and each page number has 2 digits. So, Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob

Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solv

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