Solve This Number Puzzle
Find the next number in the series 1, 4, 5, 6, 7, 9, 11, ?Correct answers: 83
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
Night vision tubeIn 1936, the first electron tube to enable night vision was described, in St Louis, Mo. |