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At first glance, the puzzle looks incredibly simple.
Four glasses labeled A, B, C, and D appear to contain nearly identical amounts of water. But inside each glass sits a different object — and that tiny detail changes everything.
The challenge sounds easy:
Which glass actually contains the most water?
But as thousands of people discovered online, the answer depends on whether you focus on appearance… or physics.
Glass A contains a paperclip.
Glass B holds a baseball.
Glass C contains an eraser.
Glass D has a wristwatch.
Continued on the next page
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