Category: Hitchhiker Guide: The most savage psychic torture a sentient being can undergo.?

Questions

What are the only food that astronauts do not have to treat & dehydrate when flying in space?

What are the only primes that end in 2 or 5?

What are the only two landlocked countries in South America (alphabetical order)?

What are the only two London boroughs that start with the letter 'e'?

What are the pouched animals called?