Lemma
MediumDigits
AQuA-RAT train #871 · Number Theory · Digits

A and B are positive two-digit integers such that the tens digit…

A and B are positive two-digit integers such that the tens digit in A is the same as the units digit in B, and the units digit in A is the same as the tens digit in B. Which of the following CANNOT be the difference of A and B ?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #871

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