BRAIN TEASERS

INVERSION GAME 1

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The goal of the game is to colour all the 25 squares. Clicking will invert colours of all the squares within the shape of pattern.

The game is designed for all ages and stimulate children's creativity and reasoning.
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Ballpen in space

When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity.
To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to 300 C.
The Russians used a pencil.

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