#imo
IMO 1985 LL CUB17
IMO 1985 LL CUB17 Origin: CUB Problem Set An = n k=1 k6 2k . Find limn\to\inftyAn.
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Mathematics
Mathematics Worked solutions to several mathematical problem collections. Each collection has its own index with the full list of problems. The International Mathematical Olympiad sets the hardest problems given to high-school students anywhere, six a year since 1959. Around the contest sit its two feeder collections: the IMO Shortlist , the pool from which each year's jury picks the final six, and the IMO Longlist , the wider set of...