### What is always in front of you but cannot be seen?

Do you want to exercise your mind with this riddle? Let's have some fun for a moment. You can check the hint and answer below.

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### HUH????

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### Guess the number

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### fun

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### ABCDEFGHI

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### Rhind Papyrus - 27

Nice activity for maths' history, fractions and equations. The idea is read only the text... because the point is just think and write the equation.

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### Rhind Papyrus - 26

Funny way to introduce maths' history and to look back to fractions and equations.

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### Rhind Papyrus - 25

This is an old problem, which could be use to explain some maths' history, fractions and equations. The point is just think and write the equation. Solving is easy.

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### travel around the world

alittle bit hard. but you can did it !

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