What is the sine of the angle at 60 degrees in the unit circle chart?
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What is the number of ways to arrange 8 books on a shelf, given that 2 of them must always be together?
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Math question: What is the smallest value of n in Fermat's Theorem equation x^n + y^n = z^n, where x, y, z, and n are positive integers, not equal to 1?