MATH PUZZLE: Can you replace...
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 97
The first user who solved this task is On On Lunarbasil.
#brainteasers #math #riddles
Edison patentsIn 1889, Thomas A. Edison was issued two U.S. patents: "Method of Winding Field Magnets," and a "Phonograph." |