The average of the first five multiples of 9 is:

  1. 20
  2. 27
  3. 28
  4. 30

To find the average of the first five multiples of 9, we can sum up the multiples and then divide by the total number of multiples.

The first five multiples of 9 are 9, 18, 27, 36, and 45.

Now, add them up:

9+18+27+36+45=135

Now, divide by the total number of multiples (which is 5):

Average=1355=27 

So, the average of the first five multiples of 9 is 27.

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