Lemma
MediumPermutations & combinations
AQuA-RAT train #17334 · Combinatorics · Permutations & combinations

There are three places P, Q and R such that 3 roads…

There are three places P, Q and R such that 3 roads connects P and Q and 4 roads connects Q and R. In how many ways can one travel from P to R?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #17334

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