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4,162,235 views
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Philosophy & Religion
Can you solve the famously difficult green-eyed logic puzzle?
lesson duration 04:42
14,183,790 views
407,609 views
Design, Engineering & Technology
What's the difference between accuracy and precision?
lesson duration 04:53
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Data Analysis & Probability
Why do competitors open their stores next to one another?
lesson duration 04:07
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629,015 views
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