Lemma
MediumPermutations & combinations
AQuA-RAT train #22916 · Combinatorics · Permutations & combinations

In how many ways can the letters D, I, G, I be…

In how many ways can the letters D, I, G, I be arranged so that the two I's are not next to each other?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #22916

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