Replace the question mark with a number
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 795
The first user who solved this task is Дејан Шкребић.
#brainteasers #math #riddles
Harvey FletcherDied 23 Jul 1981 at age 96 (born 11 Sep 1884).American acoustical engineer who was the first to demonstrate stereophonic sound (1934). He was a trail blazing investigator of the nature of speech and hearing, noted for his contributions in acoustics, electrical engineering, speech, medicine, music, atomic physics, sound pictures, and education. He guided the development of the Western Electric Hearing Aid, the first such device to use vacuum tubes. He developed a group survey method using recorded sound of decreasing volume which has wide acceptance in schools throughout the nation. |