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What is the average (arithmetic mean) of all the multiples of ten from 10 to 190 inclusive?
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What is the average (arithmetic mean) of all the multiples of ten from 10 to 190 inclusive?

User Docsteer
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1 Answer

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You've got 19 numbers. Their sum is 10(1+2+3+...+19) or
10*(20*19)/(2). Divide that by 19, to get
(10*20)/(2)=100
User Ryan Burke
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