Lemma
MediumPermutations & combinations
AQuA-RAT train #14578 · Combinatorics · Permutations & combinations

Which of the following leads to the correct mathematical solution for the…

Which of the following leads to the correct mathematical solution for the number of ways that the letters of the word RADAR could be arranged to create a five-letter code?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #14578

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