What is the sum of the series \(12, 2, 15, -1, 18, -4, 21, -7, \ldots, 30?\)

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by VJesus12 » Tue Jan 05, 2021 12:11 pm

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What is the sum of the series \(12, 2, 15, -1, 18, -4, 21, -7, \ldots, 30?\)

A. 74
B. 84
C. 94
D. 104
E. 114

Answer: E

Source: e-GMAT

Source: Beat The GMAT — Data Sufficiency | Tue Jan 05, 2021 12:11 pm

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