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How many natural numbers divisible by 7 between 1 and 1000?

Published in Number Theory 1 min read

There are 142 natural numbers divisible by 7 between 1 and 1000.

Here's how we arrive at that answer:

  • Understanding the Problem: We need to find all numbers that can be divided by 7 without leaving a remainder, within the range of 1 to 1000.
  • Finding the Largest Multiple: The largest number not exceeding 1000 that is divisible by 7 is 994, as 994 divided by 7 equals 142 (994 / 7 = 142).
  • Counting the Multiples: This means there are 142 multiples of 7 between 1 and 1000 inclusive. This is because the multiples are 71, 72, 73... all the way up to 7142 which is 994.

Here's a breakdown in a table format:

Starting Number Ending Number Divisor Largest Multiple in Range Number of Multiples
1 1000 7 994 142

The reference confirms this, stating:
"The largest number not exceeding 1000 that is divisible by 7 is 994 (994/7 = 142). Thus there are 142 numbers not exceeding 1000 that are divisible by 7."

Therefore, there are exactly 142 natural numbers divisible by 7 between 1 and 1000.

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