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This Probability Problem Seems So Simple—But Can You Actually Solve It?

hand holding globe icon
Can You Solve This Probability Problem?Boris Zhitkov - Getty Images

Here at PopMech, we love mind-bending math and logic puzzles, which is why we regularly recruit the sharpest minds in the world to concoct riddles that will test your critical thinking, mathematics, and logic skills. The following riddle is one particularly punishing problem—so go grab a pencil and a piece of scratch paper and prepare to rip your hair out (in the best way). No cheating!


➡ The Problem

Pick three points at random anywhere on the globe. What is the probability that all three of the points will be in the same hemisphere?

➡ The Hint

Don’t know where to start? Play around on Google Earth and come up with a hypothesis.

➡ The Solution

Ready for the solution? Click here to see if you’re right —and to get an insanely in-depth breakdown of how to solve this problem, plus the complete answers to 100+ other challenging riddles.

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