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PSC Brain Quest

Science Riddles & Mysteries

Solve science riddles, earn XP, and create your own Brain Quest for the community!

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All Science Mystery Logic & Reasoning Picture Riddle Guess the Scientist What Am I? Science Myth or Fact Engineering Puzzle Mathematics PSC History
Engineering Puzzle 3
Engineering Puzzle
The Final Piece
I am the very last block placed at the highest point of a curved arch. Even though I am just one single piece, if you remove me, the entire structure will collapse. What am I?
5 XP 9 tried  ·  9 solved
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Engineering Puzzle
The Ultimate Brain Teaser
2. The Invisible Traveler ⭐⭐⭐⭐⭐ The faster you chase me, the farther I seem. Stand still, and I arrive. I exist for everyone, but no one can keep me. What am I?
5 XP 10 tried  ·  10 solved
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Engineering Puzzle
The Shared Secret
I am a mathematical secret shared between two friends. I can lock your digital messages into a scrambled mess, and I am the only one who can unscramble them back to normal. What am I?
5 XP 15 tried  ·  13 solved
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