Solve This Number Puzzle
Find the next number in this series: 5, 7, 12, 19, 31, 50, ?Correct answers: 199
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
Magic lantern slidesIn 1850, the first U.S. patent for magic lantern slides made of glass plate was issued to their inventor Frederick Langenheim of Philadelphia, Pa. (No. 7,784) as an "improvement in photographic pictures on glass." |