Lemma
MediumSequences & series
AQuA-RAT train #82373 · Algebra · Sequences & series

In the arithmetic sequence t1, t2, t3, ..., tn, t1=23 and tn=…

In the arithmetic sequence t1, t2, t3, ..., tn, t1=23 and tn= tn-1 - 3 for each n > 1. What is the value of n when tn = -13?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #82373

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