Reflecting on her years in high school, a TikToker named Taylor recalled a “pool party” her math teacher threw for her class after they all passed a test. With help from parents, the teacher crafted ...

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In a sport where gold and silver can be separated by a fraction of a second, many of the world’s top swimmers now scour data for even the smallest edge. Kate Douglass of the United States often wears ...

Three water pumps, A, B and C, can be used to fill a pool. Pump A can fill the pool in two hours, pump B takes three hours, and pump C takes six hours. How long does it take for the pool to fill if ...