Lemma
MediumRatio, proportion & variation
AQuA-RAT train #67517 · Algebra · Ratio, proportion & variation

What number should be added to each of the numbers 8, 21…

What number should be added to each of the numbers 8, 21, 13 and 31 so that the resulting numbers, in this order form a proportion?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #67517

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