70% knows the answer to this question: "Who famously defeated Bobby Riggs in a televised tennis match in Texas in 1973? "

And do you know the answer to this one? "I have red hair, I married a handsome Cuban and am considered TV royalty, who am I?"

49% knows the answer to this question: "Which pair of animal species and type is correct? "

And do you know the answer to this one? "..... has left the building"

77% knows the answer to this question: "What direction is sunrise? "

And do you know the answer to this one? "Coq au vin is a chicken dish cooked in what?"

87% knows the answer to this question: "Israel launched Operation Protective Edge in which area in 2014? "

And do you know the answer to this one? "In what city did Princess Diana suffer her fatal car crash?"

77% knows the answer to this question: "Which of these was a hit single for The Mamas & the Papas in 1966? "

And do you know the answer to this one? "Which record company was founded in Detroit by Berry Gordy, Jr, a former boxer, who applied many of the business techniques he'd seen working on the Ford assembly line?"

91% knows the answer to this question: "What was the head of state in Iran called before the revolution of 1979? "

And do you know the answer to this one? "What phrase can refer to June in Jaipur, or to a warm spell in late autumn in North America?"

74% knows the answer to this question: "In 2007 Fergie had a hit with "Big Girls Don't..."? "

And do you know the answer to this one? "Finish this line of Gerry Goffin and Carole King lyrics: "Everybody's doin' a brand new dance now - (C'mon baby ___________"."

60% knows the answer to this question: "Anne Boleyn and Catherine Howard were married to which English king? "

And do you know the answer to this one? "Where on the Earth would oceans be warmer?"

70% knows the answer to this question: "What brother-sister team was the top-selling musical act through the 1970s? "

And do you know the answer to this one? "Originally planned for Boulder Canyon, what dam in the Black Canyon created Lake Mead?"

59% knows the answer to this question: "The Dutch East India Company founded a station in what African country, establishing a settlement? "

And do you know the answer to this one? "New Orleans and San Francisco have the only National Historic Landmarks that move. What are they?"

75% knows the answer to this question: "What device consists of one or more cells that produce direct current? "

And do you know the answer to this one? "What organ has two chambers called atriums and two chambers called ventricles?"

44% knows the answer to this question: "Which of the following is a well-known Japanese condiment? "

And do you know the answer to this one? "Which is the app that diagnoses you with an illness according to your symptoms?"