30% knows the answer to this question: "Which of these is Portugal's capital city? "

And do you know the answer to this one? "If you go to a Delhi deli and get Delhi belly from the dhuli dals you order, what country are you in?"

71% knows the answer to this question: "In which European city is there a famous red-light district? "

And do you know the answer to this one? "What is the name of the digital music service started by Apple in 2001?"

33% knows the answer to this question: "Torald Sollmann tried to find an antidote to what horrific gas ... by spraying himself with it? "

And do you know the answer to this one? "Used to treat diabetes, what was the first genetically engineered drug approved by the FDA?"

30% knows the answer to this question: "Her last name, Gudmundsdottir, simply indicates who her dad is, while her first name means "birch" in Icelandic. Who is she? "

And do you know the answer to this one? "What song has the line, "And when you smile the world is brighter, you touch my hand and I'm a king"?"

35% knows the answer to this question: "What foreign prince married an American film star in 1956? "

And do you know the answer to this one? "What was the unusual first name of Civil War General Jackson?"

79% knows the answer to this question: "Who sang the famous song "Imagine" (1971) "

And do you know the answer to this one? "Who sang the song, "Vogue"?"

37% knows the answer to this question: "Who sang the famous song Can't Get Enough Of Your Lovin' (1975)? "

And do you know the answer to this one? "Who sang the famous song "Under The Bridge" (1992)"

87% knows the answer to this question: "Which fraction is the largest? "

And do you know the answer to this one? "What river, the longest on its continent, carries more water than do the longest rivers on every other continent combined?"

53% knows the answer to this question: "What is the core human body temperature in degrees Celsius? "

And do you know the answer to this one? "Which member of the Beatles said he wanted to leave in September 1969?"

31% knows the answer to this question: "In the "Harry Potter" saga, what does Harry eat so he can breathe under water? "

And do you know the answer to this one? "Sarcoma is a type of which condition?"

87% knows the answer to this question: "What animal is a brilliant red bird with a short, wide bill? "

And do you know the answer to this one? "Which rocker once got in trouble for urinating on The Alamo in San Antonio, Texas?"

82% knows the answer to this question: "Charles de Gaulle became leader of which country in 1959? "

And do you know the answer to this one? "Which of these lies closest to Australia?"