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Viktor Kiprono

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last 3 solved tasks
Look carefully the picture and guess the game name.
What numbers should replace the question mark? (16, 23, 19, 19, 22, 15, 25, ?)
If 7ab0c - a877b = 5ca24 find number abc. Multiple solutions may exist.

Photofinish camera

In 1936, the first photofinish camera was installed at a U.S. racetrack. The electric eye was used for races at Hialeah, Florida.

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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