AQuA-RAT train #53613 · Combinatorics · Permutations & combinations
in how many ways seven letters between A & B be arranged…
in how many ways seven letters between A & B be arranged from alphabets so that repetition is not allowed?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #53613
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