Lemma
MediumPermutations & combinations
AQuA-RAT train #73465 · Combinatorics · Permutations & combinations

Numbers like 12345, 13542 and 21435 are some of the 120 different…

Numbers like 12345, 13542 and 21435 are some of the 120 different arrangements that can be made from the digits 1, 2 , 3, 4 and 5. If all 120 arrangements are placed in ascending manner, what will be the 87th number?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #73465

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