40% knows the answer to this question: "Which of the following months has 31 days? "

And do you know the answer to this one? "Who had the hit 60's song "(I Can't Get No) Satisfaction" on London?"

41% knows the answer to this question: "Which of the following is largest? "

And do you know the answer to this one? "In addition to being the largest animal, it also makes the loudest sound, which can be heard more than 500 miles away. What is it?"

77% knows the answer to this question: "The exact spot where what event happened is marked with a little zeppelin, atop a wind vane on a pole, on a military base in Lakehurst, New Jersey? "

And do you know the answer to this one? "Who shot and killed Martin Luther King, Jr. on a hotel balcony in Memphis on 4 April 1968?"

51% knows the answer to this question: "It's thought that the Pacific tree frog is the only species of frog to make this noise, but because it lives in Hollywood, the sound became established through the movies. What sound is this? "

And do you know the answer to this one? "Which paired organ in your body is two different sizes, because it makes room for your heart?"

48% knows the answer to this question: "Who sang the famous song "Yellow" (2000) "

And do you know the answer to this one? "Who sang the famous song "Bad Romance" (2009)"

31% knows the answer to this question: "The most common place for a hernia in a man is where? "

And do you know the answer to this one? "What is a strongly defended, often walled building or group of buildings used by the military?"

41% knows the answer to this question: "Which word is spelled wrong? "

And do you know the answer to this one? "Which word is spelled wrong?"

31% knows the answer to this question: "A 'bakers dozen' is how many? "

And do you know the answer to this one? "This animal's memory isn't so special, it doesn't die en masse in graveyards, and it's not so much that they're scared of mice, but that they can be surprised by them in confined spaces. What are these pachyderms?"

93% knows the answer to this question: "What was Germany's WWII tactic of using overwhelming mechanised forces at high speed to break through enemy lines called? "

And do you know the answer to this one? "What is a young swan known as?"

90% knows the answer to this question: "I was photographed wearing Nazi uniform at a costume party in 2005, who am I? "

And do you know the answer to this one? "I won Afghanistan's election to lead the country in 2004, who am I?"

30% knows the answer to this question: "Which of these countries is in Scandinavia? "

And do you know the answer to this one? "La Scala is a famous opera house in which country?"

67% knows the answer to this question: "What is a colorful fish that lives among sea anemone? "

And do you know the answer to this one? "Which country did Joan of Arc try to set free from English domination?"