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Q: 1 what is S n for the Arithmetic series with d -4 a n 27 and n 9 2 What are the two means between 2 and 1 4?
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What are two arithmetic means between 3 and 24?

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What would the 5th Arithmetic mean be equal to if 8 Arithmetic Means are placed between 2 and 17?

It is not possible to place 8 arithmetic means between two numbers since they can have only one arithmetic mean not eight! The one-and-only arithmetic mean of 2 and 17 is (2+17)/2 = 9.5


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How do you determine if a sequence is arithmetic?

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You can use the formula for an arithmetic series for that.


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The difference between arithmetic and geometric mean you can find in the following link: "Calculation of the geometric mean of two numbers".


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An arithmetic-geometric mean is a mean of two numbers which is the common limit of a pair of sequences, whose terms are defined by taking the arithmetic and geometric means of the previous pair of terms.