MATH PUZZLE: Can you replace...
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 286
The first user who solved this task is Thinh Ddh.
#brainteasers #math #riddles
Edison patentIn 1912, Thomas A. Edison received U.S. patent No. 1036470 for a "Phonographic Apparatus," and No. 1036471 for a "Storage Battery." |