AQuA-RAT train #62380 · Combinatorics · Permutations & combinations
In how many different ways can the letters of the word 'RETAIL'…
In how many different ways can the letters of the word 'RETAIL' be arranged such that the vowels must occupy only the even positions?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #62380
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