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Q: Average of two numbers is 9 If the third numbers is 12 than what is the average of this three numbers?

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It should be 2.

To calculate the average of two numbers, add them together, and divide the result by 2. (For the average of three numbers, you add up the three numbers, and divide by three, etc.) The average is (5000 + 7000)/2 = 6000

12

The average of the numbers 51, 52, and 56 is 53. To get the average you would add all three numbers and then divide by three.

The average of these three numbers is 12.

The average of these three numbers is 10.666

The average of these three numbers is 20.

3, 5, and 7 are three prime numbers whose average is 5.

Yes. For example, the average of 5, 7, and 9 is 7.

The average of the numbers 148, 99, and 119 is 122.

Average of three = 20 so total of three = 60; 60 - (28 + 15) = 60 - 43 = 17

3, 5, and 7 are three prime numbers whose average is 5.

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