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This quiz is so hard that it will probably make you cry.

Question 1 of 10

3D is height, width and breadth. Under Einstein's general theory of relativity, what is the fourth dimension?

Question 2 of 10

In medieval England what unit of measure equaled the length of 3 grains of barley?

Question 3 of 10

Logan Airport, from which many of the 9/11 terrorists departed, is in what city?

Question 4 of 10

Where did the Chukchi people raise huskies as a sled dog, watchdog and pet?

Question 5 of 10

Found in a creeping vine of the Amazon jungle, what deadly toxin is now used safely in surgery as a muscle relaxant?

Question 6 of 10

Fredrick Sanger invented which life saver?

Question 7 of 10

The world's first x-ray astronomy satellite was named for the Swahili word for "freedom," because it was launched into orbit from Kenya. As Trekkies might guess, what was it called?

Question 8 of 10

Which of the following insects can fly at a speed of around 60 mph?

Question 9 of 10

I have just bought Lucky, whom my British buyer tells me is a champion thoroughbred racehorse. But on the form, I see that Lucky is 14.5 hands high at the shoulder and weighs 58 stone. Why should I be worried?

Question 10 of 10

What space shuttle, the very first, was used for atmospheric approach and landing tests in 1977 ... and then put in storage?

Who Sang Quizzes

Who Sang These Songs?

How many artists did you know?

Average Score: 8

88% knows the answer to this question: "Who originally rocked "Hound Dog" (1956)? "
Do you know who sang these songs?

Try scoring a 6+

Average Score: 9

52% knows the answer to this question: "Who sang the famous song "What A Wonderful World" (1968) ? "
Who sang?

How many songs didn't you know?

Average Score: 6

71% knows the answer to this question: "Who sang "La Bamba" (1958)? "
Who sang these classic Christmas songs?

Most people have no clue

Average Score: 2

20% knows the answer to this question: "Who sang the classic 'White Christmas'? "
Think you know these songs?

prove it!

Average Score: 8

49% knows the answer to this question: "Who delivered the heartfelt hit “Wonderful Tonight” (1977)? "
Music Quiz For Music Geniuses

Who Sang These Songs?

Average Score: 7

85% knows the answer to this question: "Which Motown classic charmed audiences with "My Girl" (1964)? "

General Knowledge Quizzes

Mixed Trivia Quiz for Intellectuals

Dare to play?

Average Score: 5

25% knows the answer to this question: " "
Gen Z is better spelling than Generation X.

Spelling

Average Score: 9

70% knows the answer to this question: " "
Challenging Knowledge Quiz

Can you prove us wrong?

Average Score: 6

79% knows the answer to this question: " "
Knowledge Quiz: Sudden Death Edition

Will you fail before question 10?

Average Score: 0

68% knows the answer to this question: " "
Test Your General Knowledge

Play quiz to get the correct answer

Average Score: 5

32% knows the answer to this question: " "
Can you beat my score of 7 out of 10?

General Knowledge

Average Score: 9

83% knows the answer to this question: " "

Math Quizzes

Mathematics Quiz

Nobody is able to score a perfect 10

Average Score: 9

69% knows the answer to this question: "How many in a pair? "
Math Quiz

Only those who are good with numbers stand a change!

Average Score: 8

88% knows the answer to this question: "How many feet long is a 100-yard football field? "
Math Quiz

Absolutely no one scores higher than a 5

Average Score: 8

37% knows the answer to this question: "What is an estimate? "
SUDDEN DEATH QUIZ

Try to stay on your feet!

Average Score: 0

32% knows the answer to this question: "How fast do you need to travel to go 150 miles in 3 hours? "
Math Quiz

Please let us know your score below

Average Score: 9

30% knows the answer to this question: "What is 18 doubled? "
Math Quiz

Only those who are good with numbers stand a change!

Average Score: 18

68% knows the answer to this question: "What number comes next in the sequence 8, 16, 32, 64? "