Practical Geometry
Mathematics
Stars and the Solar System
Physics
Microorganisms: Friend and Foe
Biology
Materials :Metals & Non-Metals
Chemistry
Fun Fact
I am. is the shortest complete sentence in the english language.
Brain Teaser

If you have me, you want to share me. If you share me, you haven't got me. What am I?

Reveal Answer
Answer

secret

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