Can you replace the question mark with a number?
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 43
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #riddles
Telephone recorderIn 1948, the telephone recording devices were first authorized for public use in the U.S. To comply with the Federal Communications Commission regulations, when the devices were being used, a periodic "beep" tone signal was used to advise those on the telephone line that their conversations were being recorded. The recording devices has been in use by government and business prior to the adoption of the FCC regulations.* |