84% knows the answer to this question: "Which number comes next: 3, 6, 12, 24, ? "

And do you know the answer to this one? "Which shape has 5 sides?"

59% knows the answer to this question: "5 machines make 5 widgets in 5 minutes. How long for 100 machines to make 100 widgets? "

And do you know the answer to this one? "John is taller than Mary, Mary is taller than Sue. Who is shortest?"

41% knows the answer to this question: "Which country is known for inventing paper? "

And do you know the answer to this one? "Which part of the plant conducts photosynthesis?"

30% knows the answer to this question: "Which element has the chemical symbol 'O'? "

And do you know the answer to this one? "Who painted the ceiling of the Sistine Chapel?"

59% knows the answer to this question: "Which country is famous for the Eiffel Tower? "

And do you know the answer to this one? "Who is known as the "King of Rock and Roll"?"

39% knows the answer to this question: "Which animal is known as the “ship of the desert”? "

And do you know the answer to this one? "Which U.S. president issued the Emancipation Proclamation?"

43% knows the answer to this question: "Which U.S. state is the Grand Canyon located in? "

And do you know the answer to this one? "Which part of the body does an ophthalmologist specialize in?"

65% knows the answer to this question: "Which gas is most commonly used in lightbulbs? "

And do you know the answer to this one? "Which famous ship was found in 1985 after being lost since 1912?"

36% knows the answer to this question: "Who sang the 1980 hit “Call Me”? "

And do you know the answer to this one? "Who made “Addicted to Love” iconic in 1986?"

68% knows the answer to this question: "Who performed the smooth ballad “If You Don’t Know Me by Now” (1972)? "

And do you know the answer to this one? "Who sang “Let’s Stay Together” in 1972?"

60% knows the answer to this question: "Which continent is known as the “Dark Continent”? "

And do you know the answer to this one? "What is the hardest natural substance on Earth?"

61% knows the answer to this question: "What is the name of the galaxy we live in? "

And do you know the answer to this one? "Who painted the Mona Lisa?"