SAT
A standardized test administered by the nonprofit College Board and used in U.S. college admissions. It assesses reading, writing, and mathematics, and SAT is no longer officially an abbreviation for a particular phrase.
In the 1982 SAT, only 3 of 300,000 students answered a circle rotation problem correctly. Even the test makers were wrong, and the correct answer was not among the choices. The key is the coin rotation paradox: a circle rolling around an equal circle makes 2 full turns, not 1.
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