Problem: Where was the first motor race to regularly carry the name Grand Prix, the first of which took place in 1906 on a circuit roughly triangular in shape, each lap covering 105 kilometres (65 miles)?
Answer: le mans

Problem: Tabitha Babbitt is credited with which invention in 1813?
Answer: circular saw

Problem: When explaining the Doppler Effect which suffix follows the words 'Red' and 'Blue'?
Answer: shif

Problem: Which U.S. state is, technically speaking, the farthest east?
Answer:
alaska