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30-Day
Explore the 30 days
30-Day
Brain Challenge
A little curiosity. A surprising discovery. Fifteen questions that make the world more interesting, every day.
15 questions a day
450 questions to explore
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Mind Boost
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Leave with a discovery.
Leave with a discovery.
Make your choice. Find out why. Keep the fact that surprises you.
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Hard + Riddles
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Complete Experience
Continue from Day 4
All 30 days. Five Hard + Riddles rounds. A clear explanation and a Mind Boost with every answer. Keep your results and revisit every discovery.
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Which planet has the shortest day in our solar system?
Why this is correct
Mind Boost
Day 1 Complete
You learned 15 new facts.
0 / 15Correct answers
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15Facts unlocked
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