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I can't be wrong!

Logic Level 2

Achal's cat always sneezes before it rains. It sneezed today."This means it will be raining today", Achal thinks. Is he always right?

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 7 million people

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

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by Achal Jain

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