Difference between revisions of "2023 AMC 10B Problems/Problem 2"

Latest revision as of 19:53, 15 November 2023

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Revision as of 13:17, 13 November 2023 (view source) Rollover2020 (talk \| contribs) ← Older edit		Latest revision as of 19:53, 15 November 2023 (view source) Eevee9406 (talk \| contribs) (Changed redirect target from 2023 AMC 12A Problems/Problem 2 to 2023 AMC 12B Problems/Problem 2) (Tag: Redirect target changed)
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−	~~There are 2022 users on a social network called Mathbook, and some of them are Mathbook-friends. (On Mathbook, friendship is always mutual and permanent.)~~	+	#redirect[[2023 AMC 12B Problems/Problem 2]]
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−	Starting now, Mathbook will only allow a new friendship to be formed between two users if they have at least two friends in common. What is the minimum number of friendships that must already exist so that every user could eventually become friends with every other user?