AQuA-RAT train #1581 · Probability · Counting & chance
Each of seven different locks has a matching key
Each of seven different locks has a matching key. The keys are randomly reassigned to the locks. What is the probability that exactly two of the keys fit the locks to which they are reassigned?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #1581
Stuck? A gentle nudge
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