Replace the question mark with a number
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 333
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
Radio patentIn 1896, the first radio patent was issued to Guglielmo Marconi in England for his wireless telegraphy apparatus (U.K. 12,039) for “Improvements in Transmitting Electrical Impulses and Signals, and in Apparatus Therefor.” Improvements are given in a later Marconi patent, No. 7,777 of 1900.[Image: Figure from Marconi's first wireless specification.] |