Lemma
MediumPermutations & combinations
AQuA-RAT train #50994 · Combinatorics · Permutations & combinations

A student must answer 7 out of 10 questions on an competitive…

A student must answer 7 out of 10 questions on an competitive examination. If at least 3 of the first 5 questions must be answered, how many possible combinations of 7 questions are available to the student?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #50994

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