Lemma
MediumPermutations & combinations
AQuA-RAT train #39149 · Combinatorics · Permutations & combinations

How many different arrangements are possible to place seven different books on…

How many different arrangements are possible to place seven different books on a shelf if all three math books must be placed next to each other?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #39149

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