94% knows the answer to this question: "The brilliant plumage of what national bird of India is due to an optical interference phenomenon called the Bragg reflection? "

And do you know the answer to this one? "Which illness is caused by lack of vitamin 'C'?"

83% knows the answer to this question: "What is another name for the voice box? "

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43% knows the answer to this question: "Who sang the famous song ”Mack the Knife” (1959)? "

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69% knows the answer to this question: "Which former president had worked as a peanut farmer? "

And do you know the answer to this one? "How often is annually?"

57% knows the answer to this question: "Israel launched Operation Protective Edge in which area in 2014? "

And do you know the answer to this one? "What vegetable crop do we pick and eat the ears of? "

94% knows the answer to this question: "What type of dog did Queen Elizabeth II of England call her favorite? "

And do you know the answer to this one? "A British "Give-Way" road sign is equal to what triangular American sign?"

47% knows the answer to this question: "The film "Jack the Giant Slayer" is a retelling of what tale? "

And do you know the answer to this one? "Who was a member of the conservative Likud party of Israel and was once Prime Minister?"

74% knows the answer to this question: "If a five day vacations costs 2500 dollars, how much does each day cost? "

And do you know the answer to this one? "What is the area of a rectangle with sides 4 x 9 feet?"

55% knows the answer to this question: "The internet expression "TGIF" is used to express a person's love for what? "

And do you know the answer to this one? "Peru, the third largest country in South America, harbors which capital city?"

48% knows the answer to this question: "What Roman town was destroyed by the eruption of Mt. Vesuvius? "

And do you know the answer to this one? "Napoleon was an emperor of which country?"

59% knows the answer to this question: "What was the title of the 1961 #1 hit by Del Shannon? "

And do you know the answer to this one? "Exactly what color was T-Rex?"

63% knows the answer to this question: "Who sang the famous song "Help" (1965) ? "

And do you know the answer to this one? "Who sang the famous song "Unchained Melody" (1965) ?"