How would you search for web pages that contain the phrases "Rolling Stones" and "Pink Floyd" separated by no more than 4 words?

Which of the following actions could get you banned by Google?

Which of the following will retrieve search results from government and educational sites on the topic of homelessness?

Which operator can be used to search for keywords appearing in hyperlinked text?

For which occasion was the first Doodle created?

Google Social Search was introduced in what year?

If Google Instant is enabled, what changes?

How would you search for dogs.about.com as saved by Google?

If you are searching for "food facts," how could you extend the search to include synonyms for food, including (but not limited to) "nutrition?"

How would you search for the word biking in a url?

How would you search for a page containing both hiking and Mt. Washington in the title?