A certain street has 1000 buildings. A sign-maker is contracted to number the houses from 1 to 1000. How many zeroes will he need?

Question

A certain street has 1000 buildings. A sign-maker is contracted to number the houses from 1 to 1000. How many zeroes will he need?
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Solution 1

To solve this problem, we need to consider how many times the number '0' appears in each set of numbers:

  1. From 1 to 9, there are no zeroes.
  2. From 10 to 99, '0' appears 10 times in the units place (10, 20, 30, ..., 90) and 10 times in the tens place (10, 20, ..., 90). So, a total of 20 times.
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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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