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What is S7 for the arithmetic series: a1 = 26, d = 3, and a7 = 44
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What is S7 for the arithmetic series: a1 = 26, d = 3, and a7 = 44

User Sushil Kumar Sah
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1 Answer

4 votes

Answer:

The answer is 245

Explanation:

For arithmetic series with n=7: S7=(a1+a7)*7/2

Thus, S7=(26+44)*7/2=245

The answer is 245

User Sergey Berezovskiy
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