'Impossible' question stumps students
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18:14
Could you pass this interview? The famous batteries and flashlight logic puzzle
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6:33
A very challenging question
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18:25
The SAT Question Everyone Got Wrong
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8:36
Most US college students cannot solve this
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11:24
Singapore test question that left students crying
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11:35
12 Riddles to Check if You Can Escape from Dangers
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16:17
Craziest Animal Encounters of All Time
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38:38