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How many two-digit numbers are divisible by 6?

Published in Mathematics 1 min read

There are 15 two-digit numbers divisible by 6.

These numbers form an arithmetic progression (AP) with the first term being 12 and the common difference being 6. The last two-digit number divisible by 6 is 96.

To find the number of terms in this AP, we can use the formula:

  • a + (n - 1)d = l

where:

  • a is the first term (12)
  • n is the number of terms (unknown)
  • d is the common difference (6)
  • l is the last term (96)

Substituting these values into the formula:

  • 12 + (n - 1)6 = 96
  • 6n + 6 = 96
  • 6n = 90
  • n = 15

Therefore, there are 15 two-digit numbers divisible by 6.

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