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Can you solve the alien probe riddle?

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About this Puzzle

Your team has developed a probe to study an alien monolith. It needs protective coatings — in red, purple or green — to cope with the environments it passes through. Can you figure out how to apply the colors so the probe survives the trip? Dan Finkel shows how.

Practice more problem-solving at https://brilliant.org/TedEd
Solution to Bonus Riddle: https://brilliant.org/TedEd3ColorCube

Lesson by Dan Finkel, directed by Anton Trofimov.

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