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What is the sum of the last four terms of the series 97+99+101+...+121
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What is the sum of the last four terms of the series 97+99+101+...+121

User Andrea Antonangeli
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This is an arithmetic sequence because each term is 2 greater than the previous term. So the sum of the last four terms are:

121+119+117+115

472
User Alex Alifimoff
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