Lemma
MediumPermutations & combinations
AQuA-RAT train #45743 · Combinatorics · Permutations & combinations

From among the 36 students in a class, one leader and one…

From among the 36 students in a class, one leader and one class representative are to be appointed. In how many ways can this be done?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #45743

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