What year did tennis player, Martina Hingis, turned professional?

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Under which pseudonym did J. K. Rowling publish "The Cuckoo's Calling" in 2013?

Whose autobiography was entitled "The Long Walk to Freedom"?

Which continent is the country Comoros located in?

In which European country is the resort town of Spa?

What is the only US state with a Union Jack on its flag?

What is the chemical symbol for Calcium?

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What is it that turns red litmus paper blue?

How many horns did a triceratops have?

What Happy Day's star turned down the plum film role of Danny Zuko in "Grease"?

What is the name of Goldie Hawn's daughter who starred in the 2000 movie "Almost Famous"?

How many of the seven dwarfs had mustaches?

What decades was the Zodiac Killer active in the US?

Which 1912 maritime disaster was responsible for numerous changes and improvements in maritime safety?