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How many natural numbers are there between 23 and 100 which are exactly divisible by 6?

Published in Number Theory 1 min read

There are 13 natural numbers between 23 and 100 that are exactly divisible by 6.

Let's break down how to find this answer:


Finding the First Multiple

The first multiple of 6 greater than 23 is 24 (6 x 4).

Finding the Last Multiple

The last multiple of 6 less than 100 is 96 (6 x 16).

Listing the Multiples

The multiples of 6 between 24 and 96, inclusive, are:

  • 24 (6 x 4)
  • 30 (6 x 5)
  • 36 (6 x 6)
  • 42 (6 x 7)
  • 48 (6 x 8)
  • 54 (6 x 9)
  • 60 (6 x 10)
  • 66 (6 x 11)
  • 72 (6 x 12)
  • 78 (6 x 13)
  • 84 (6 x 14)
  • 90 (6 x 15)
  • 96 (6 x 16)


Calculation

We can also calculate the number of multiples using the following steps:

  1. Divide the first multiple by 6: 24 / 6 = 4
  2. Divide the last multiple by 6: 96 / 6 = 16
  3. Subtract the smaller quotient from the larger one and add 1: 16 - 4 + 1 = 13


Conclusion

Therefore, based on the provided reference and our calculation, there are 13 natural numbers between 23 and 100 that are exactly divisible by 6.