10. It is what you get when you add the two numbers together and divide by two and it is the number that is halfway between the two numbers.
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The arithmetic mean of 10, 11, and 6 is 9. Add them together then divide by 3.
5 +9 = 9 + 5 is an example of arithmetic commutativity
Median of the set = arithmetic mean of 8 and 9 = 8.5
To find the mean you add them all up then divide by the number of numbers so: 1+3+5+7+9+11 divided by 6 = 36/6 = 6
The answer to that arithmetic is 4,568.Do the math. Yeah no kidding do the math.....again it is 4,691.