48% knows the answer to this question: "What is the name of London's busiest airport? "

And do you know the answer to this one? "Who was US President between 1945-1953?"

90% knows the answer to this question: "Which 1935 New Deal program provided disabled and elderly people with monthly payments? "

And do you know the answer to this one? "Work started on the Brooklyn Bridge in which city in 1870?"

75% knows the answer to this question: "What country borders the United States along the U.S.'s southern border? "

And do you know the answer to this one? "If you order a wine in a French restaurant, how will it probably be served?"

86% knows the answer to this question: "What 1980 movie included the characters named Otis and Superman/Clark Kent? "

And do you know the answer to this one? "Which of these continent - country - capital groups is correct?"

93% knows the answer to this question: "What type of fish can be Brown, Speckled or Rainbow? "

And do you know the answer to this one? "What spacecraft takes astronauts into space, orbits the Earth and can be flown more than once?"

65% knows the answer to this question: "What comes before Pistols for the name of an iconic 1970s punk group? "

And do you know the answer to this one? "What river literally becomes the Big Muddy after it collides with the Missouri near St Louis?"

53% knows the answer to this question: "Which country was placed under an international oil embargo in 2012? "

And do you know the answer to this one? "What is the name of the first smartwatch?"

79% knows the answer to this question: "Rosa Parks refused to give up her seat on which form of transport? "

And do you know the answer to this one? "DiMaggio was breaking batting records in which sport in 1950?"

46% knows the answer to this question: "What device controls temperature with a switch? "

And do you know the answer to this one? "What was the two letter term for the operating system launched by Microsoft in 2001?"

84% knows the answer to this question: "Which people were bottom of the social scale in medieval society? "

And do you know the answer to this one? "The Romanovs were the royal family of which country?"

91% knows the answer to this question: "Which of these objects takes up the most space? "

And do you know the answer to this one? "First published in 1880, newspaper "The Stage" is about which industry?"

63% knows the answer to this question: "What type of animal is an Aberdeen Angus? "

And do you know the answer to this one? "The first part of eating is sensory. Which of your senses is most closely connected with your sense of taste?"