68% knows the answer to this question: "What is the unit of weight by which a gemstone is measured? "

And do you know the answer to this one? "Who ya gonna call? A lawyer! What movie was sued by the Caspar the Friendly Ghost people and got theme-song writer Ray Parker Jr sued by Huey Lewis and the News?"

72% knows the answer to this question: "Yellowstone Lake is in which national park? "

And do you know the answer to this one? "Sixteen Adipose are in a basket. If one gets out and two more gets in, how many are in the basket now?"

86% knows the answer to this question: "In what country was the famous artist Leonardo da Vinci born? "

And do you know the answer to this one? "Einstein's E=mc2 equation is known as the theory of what?"

58% knows the answer to this question: "Which major river flows north through Africa and empties in the Mediterranean Sea? "

And do you know the answer to this one? "Islamabad is the capital of which "P"?"

34% knows the answer to this question: "What puzzle won "Toy of the Year" in 1980? "

And do you know the answer to this one? "Who sang the famous song "Woodstock" (1970)? "

89% knows the answer to this question: "Anne Boleyn and Catherine Howard were both wives of what king? "

And do you know the answer to this one? "Which species can be described as a water bird?"

41% knows the answer to this question: "What mountain, which stands at 3,776 meters, is the highest point in Japan? "

And do you know the answer to this one? "Which media personality, the daughter of Whitney Houston and Bobby Brown, passed away in July 2015?"

37% knows the answer to this question: "Which of these US cities has hosted the Summer Olympic Games? "

And do you know the answer to this one? "What is the name of a formal living room in a house?"

55% knows the answer to this question: "In September 1998 Celine Dion released an album in which language? "

And do you know the answer to this one? "Although known as the father of microbiology and immunology, what scientist got his start in crystallography?"

79% knows the answer to this question: "What was the English King Richard I's nickname? "

And do you know the answer to this one? "What epidemic spread across almost all of Europe in the years 1346-53?"

94% knows the answer to this question: "What war ended on April 30, 1975, when the Viet Cong raised its flag above Independence Palace in Saigon? "

And do you know the answer to this one? "What did London's Whitechapel Bell Foundry deliver in August 1752, in time to celebrate Pennsylvania's 50th birthday?"

44% knows the answer to this question: "Which of these celebrities publically endorsed Barack Obama in early 2008? "

And do you know the answer to this one? "Which of these meals does not contain protein?"