80% knows the answer to this question: "The sport of tennis is usually played with what? "

And do you know the answer to this one? "Famous for its tacky tourist attractions, where could you get your kicks on, at least according to a Bobby Troup song?"

70% knows the answer to this question: "The lungs, trachea and nose are part of which organ system? "

And do you know the answer to this one? "The medical term, "ophthalmic", is best defined as?"

48% knows the answer to this question: "If an item costs $10.00 and you get a 10% discount, how much will you pay for it? "

And do you know the answer to this one? "How many seconds are in an hour?"

87% knows the answer to this question: "Which of the following is a famous university that was founded in 1885? "

And do you know the answer to this one? "Google controlled two thirds of the web search market in the 2010s. It also powered Android phones and got its own web browser. What was it called?"

53% knows the answer to this question: "Back in the 1970s, why might you (or maybe your dad) have had an eight-track cartridge in the car? "

And do you know the answer to this one? "What was an important step in getting deer or moose hides ready for making them into clothes? "

30% knows the answer to this question: "Corned beef and what vegetable are a traditional St. Patrick's Day meal? "

And do you know the answer to this one? "Which of the following types of seafood is not a fish?"

30% knows the answer to this question: "Coffee mixed with whiskey and topped with whipped cream is called what? "

And do you know the answer to this one? "Mexico's largest state (by area) shares its name with the world's smallest dog (by breed). What is it?"

33% knows the answer to this question: "What tall African mammal checks out how hot the ladies are by tasting their urine? "

And do you know the answer to this one? "The medical term "phlebitis" is best defined as?"

31% knows the answer to this question: "Dodo's mum is 36 and her dad is 38 years old. If Dodo was born in 2007, how old will she be in 2019? "

And do you know the answer to this one? "What is the name of a celebrity music video made in 2008 in support of Barack Obama?"

52% knows the answer to this question: "How many years are there in a century? "

And do you know the answer to this one? "Tequila, grenadine and orange juice make up what drink?"

72% knows the answer to this question: "What monarch made repeated visits to the front throughout WWI, earning him the deep respect of his subjects? "

And do you know the answer to this one? "Who sang the famous song "Song Sung Blue" (1972) ?"

53% knows the answer to this question: "What was the purpose of the American Colonization Society, founded in 1816? "

And do you know the answer to this one? "Today, iodine is added to this edible rock to guard against goiter, while sodium silicoaluminate prevents it from clumping on muggy days. What is it?"