AQuA-RAT train #12697 · Combinatorics · Permutations & combinations
A letter lock consists of 4 rings, each ring contains 9 non-zero…
A letter lock consists of 4 rings, each ring contains 9 non-zero digits. This lock can be opened by setting four digit code with the proper combination of each of the 4 rings. Maximum how many codes can be formed to open the lock ?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #12697
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