Here's an algebra problem: Can you solve it in seconds, or will it stump you?

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Who knows! People who like mathematics will really cry when they see this!

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Three people drink three buckets of water in three days; how much water do π people drink in e days?

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Two students on a train bought the same ticket, only to have the train police chief immediately spot

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Gu Xun’er: While I was gone, Xiao Yan actually had a kid—time to crush them good!

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The mind-bending method of separation constants—used from middle school all the way through high sch

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Insanely Difficult Geometry Auxiliary Line Problems

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Even middle schoolers can tackle Peking University’s exam questions—can you?

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