Lemma
MediumSequences & series
AQuA-RAT dev #166 · Algebra · Sequences & series

The sum of 3rd and 15th elements of an arithmetic progression is…

The sum of 3rd and 15th elements of an arithmetic progression is equal to the sum of the 6th, 11th and 13th elements of the same progression. Then, which element of the series should necessarily be equal to zero ?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · dev #166

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