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What is the sum of the series represented by ∑ with 7 on top and n=3 on bottom, and (2n+5) beside? a) 14 b) 21 c) 28 d) 35
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What is the sum of the series represented by ∑ with 7 on top and n=3 on bottom, and (2n+5) beside? a) 14 b) 21 c) 28 d) 35

User Umberto
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Answer: 75


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So the right answer is 75, so none of given.
User Joell
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