AQuA-RAT test #223 · Combinatorics · Permutations & combinations
Anna has 4 books
Anna has 4 books. If she decide to arrange the 4 books in every possible combination and moved just one book every minute, how long would it taken by her ?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · test #223
Stuck? A gentle nudge
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