Problem: Because of its shape the German WW2 bomber The Dornier DO-17 was known by what nick-name?
Answer: flying pencil

Problem: In which city did IOC president Jacques Rogge announce London as the host of the 2012 Olympic Games?
Answer: singapore

Problem: What puzzle, meaning 'single number' in Japanese, requires the completion of a grid so that each column, row and 3x3 box contain the numbers 1-9?
Answer: sudoku

Problem: From which country does the Lambada dance originate?
Answer:
brazil