Thanks to JY from Indonesia for suggesting a similar problem! This is a fun and challenging problem for high school students (AMC 12). Can you solve it? Special thanks this month to: Richard Ohnemus, Shrihari Puranik, Kyle, Michael Anvari. Thanks to all supporters on Patreon! http://www.patreon.com/mindyourdecisions

2017 AMC 12A, problem 16
https://artofproblemsolving.co....m/wiki/index.php?tit

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2017 Shorty Awards Nominee. Mind Your Decisions was nominated in the STEM category (Science, Technology, Engineering, and Math) along with eventual winner Bill Nye; finalists Adam Savage, Dr. Sandra Lee, Simone Giertz, Tim Peake, Unbox Therapy; and other nominees Elon Musk, Gizmoslip, Hope Jahren, Life Noggin, and Nerdwriter.