Replace the question mark with a number
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 891
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
Edison car starter patentIn 1918, Thomas A. Edison was issued a U.S. patent for a "Starting and Current-Supplying System for Automobiles" (No. 1,255,517). |