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Al De Souza

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last 3 solved tasks
Find the country and its capital city, using the move of a chess knight. First letter is R. Length of words in solution: 6,6.
Look at the series (17, 51, 204, 1020, 6120, ?), determine the pattern, and find the value of the next number!
MATH PUZZLE: Can you replace the question mark with a number?

Synthetic diamond

In 1954, synthetic diamonds were produced at General Electric Research Laboratories by Prof. H. Tracy Hall.

Yoda on Selfies

Yoda on Selfies
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