Find the missing number
Find the missing numberCorrect answers: 188
The first user who solved this task is Eric Newton.
#brainteasers #math
Edison patentIn 1893, Thomas A. Edison received two U.S. patents. The first was for a "Cut Out for Incandescent Electric Lamps" and another for a "Stop Device" (No. 491,992-3). Also No. 492,150 for "Process of Coating Conductors for Incandescent Lamps." |