SOLUTION: What is the sum of the first 10 terms of the arithmetic series {1, 4, 7, 10 ...}

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Question 944507: What is the sum of the first 10 terms of the arithmetic series {1, 4, 7, 10 ...}
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
The common difference is .
So,


and the series is,



and
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