30% knows the answer to this question: "What city in Brazil was founded in 1565 by the Portuguese? "

And do you know the answer to this one? "Jailhouse Rock was first recorded by what artist?"

52% knows the answer to this question: "Who performed the hit "Ring of Fire" (1963)? "

And do you know the answer to this one? "Who sang the iconic track "Friends in Low Places" (1990)?"

34% knows the answer to this question: "In the nursery rhyme "Hey Diddle Diddle", who had a fiddle? "

And do you know the answer to this one? "In which country would you find the town of Wagga Wagga?"

71% knows the answer to this question: "Why were no FIFA World Cup competitions held during the 1940s? "

And do you know the answer to this one? "Which city is home to a hotel and casino with a half-scale replica of the Eiffel Tower?"

72% knows the answer to this question: "What mountain, the highest in Japan, lies about 100 kilometers south-west of Tokyo? "

And do you know the answer to this one? "What did the United States test in 1945 at Bikini Atoll in the Marshall Islands?"

33% knows the answer to this question: "How old was Prince Harry when his mother died? "

And do you know the answer to this one? "What year did American bombing of North Vietnam begin?"

77% knows the answer to this question: "Who sang the famous song "Johnny B. Goode" (1958) ? "

And do you know the answer to this one? "Who sang the famous song ”California Dreamin’” (1965)?"

43% knows the answer to this question: "What polyethylene bowls made Earl Tupper a millionaire? "

And do you know the answer to this one? "Tetanus often is introduced through dirty wounds. By what name is it better known?"

91% knows the answer to this question: "Which of these UK cities is closest to Big Ben? "

And do you know the answer to this one? "Which Australian city is most famous for its opera house and harbour bridge? "

54% knows the answer to this question: "Switzerland is located on which continent? "

And do you know the answer to this one? "Music has charms to soothe the ... beast"

90% knows the answer to this question: "Avian flu is also known as which type of flu? "

And do you know the answer to this one? "What does the G stand for in someone who is a GP doctor?"

34% knows the answer to this question: "What body of water touches the eastern coast of Mexico? "

And do you know the answer to this one? "In what U.S. is the island of Manhattan located?"