Does P=NP: Something about rare earths, then a couple books that mention the problem. https://books.google.com/talktobooks/query?q=Does%20P%3DNP%3...
Who are you: Looks like Books is shy. https://books.google.com/talktobooks/query?q=Who%20are%20you...
Why are fire trucks red? Apparently, there are different answers, and none mention the Monty Python one. https://books.google.com/talktobooks/query?q=Why%20are%20fir...
What is 1+1? 1, apparently. The same query without a question mark gives the right answer. https://books.google.com/talktobooks/query?q=What%20is%201%2...
Which company used to have the motto "don't be evil"? Not Google, it seems. https://books.google.com/talktobooks/query?q=Which%20company...