Lemma
MediumPermutations & combinations
AQuA-RAT train #20178 · Combinatorics · Permutations & combinations

Joey is planning to throw a small party and for that he…

Joey is planning to throw a small party and for that he needs to do the following tasks: I. Decide guest list II. Send invites III. Arrange catering IV. Decide the venue V. Rent a music system The tasks can be done in any order as long as the invites are sent after the guest list is decided. In how many ways can Joey do the five tasks listed above?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #20178

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