PALINDROME
Make the palindrome of the following letters: A, A, A, A, A, A, A, A, C, C, E, E, E, E, F, F, L, L, M, M, N, N, O, O, O, O, O, O, O, O, R, R, R, R, R, R, T, T, W, W, Y, Y, Y, YCorrect answers: 29
The first user who solved this task is Neelima Subrahmanyam.
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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.