87% knows the answer to this question: "The ratio of girls : boys in a class is 7 : 6. If there are 18 boys in the class, how many girls are there? "

And do you know the answer to this one? "In Maths, what means any quantity calculated by applying a function to a set of data?"

90% knows the answer to this question: "If you earn $15 in 20 minutes, how much will you earn in 10 hours? "

And do you know the answer to this one? "Why was the "lowering of the ball" in New York City suspended for New Year's Eve in 1942 and 1943?"

37% knows the answer to this question: "How many factors does a prime number have? "

And do you know the answer to this one? "Rio de Janeiro is located in which of these places?"

86% knows the answer to this question: "Who sang the song, "Jolene" (1973)? "

And do you know the answer to this one? "Who sang the song, "The Gambler" (1978)?"

95% knows the answer to this question: "Who sang the song, "Cars" (1979)? "

And do you know the answer to this one? "Who sang the song, "Jocko Homo" (1977)?"

53% knows the answer to this question: "If you are from Switzerland you are known as what? "

And do you know the answer to this one? "In what country was the Treaty of Versailles signed?"

31% knows the answer to this question: "Who founded the Mongol Empire and became one of the most feared conquerors of all time? "

And do you know the answer to this one? "Why is a large part of a globe coloured blue?"

84% knows the answer to this question: "The ancient practice of footbinding was popular in what country? "

And do you know the answer to this one? "Desalination is the removal of what from water?"

47% knows the answer to this question: "Haddock is a species of which animal? "

And do you know the answer to this one? "What is the art of designing and constructing buildings called?"

34% knows the answer to this question: "A cucumber preserved in vinegar or salt is called what? "

And do you know the answer to this one? "Which of the following is the sugar sweet treat that sticks to your face?"

54% knows the answer to this question: "What word is generally used to describe visible air pollution? "

And do you know the answer to this one? "Which of these can be used to produce electricity directly?"

44% knows the answer to this question: "What dragon, created by Peter, Paul and Mary, lived by the sea and frolicked in the autumn mist in a land called Honah Lee? "

And do you know the answer to this one? "What color of paint is hardest to see on black paper?"