Pi Trivia Quiz

10 Questions | Total Attempts: 512

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Pi Trivia Quiz

Here is a quiz about the most famous number in Maths. Test your knowledge of history! Test your ability to make educated guesses!


Questions and Answers
  • 1. 
     Who, in 1706, first gave the Greek letter “pi” its current mathematical definition?
    • A. 

      Albert Einstein

    • B. 

      William Jones

    • C. 

      Attila the Hun

    • D. 

      Archimedes

    • E. 

      Napoleon Bonaparte

  • 2. 
      Pi is transcendental.  What does this mean, in mathematics?
    • A. 

      It is equal to the ratio of two integers

    • B. 

      Its square root is imaginary

    • C. 

      It cannot be expressed as an integer, or as a root or quotient of integers

    • D. 

      It was Ralph Waldo Emerson’s favorite number.

  • 3. 
    What is the earliest known reference to pi in history? 
    • A. 

      The Rosetta Stone, approx. 200 BC

    • B. 

      The Bible

    • C. 

      An Egyptian papyrus scroll, written approx. 1650 BC by Ahmes the Scribe

    • D. 

      Euclid’s Elements, written in the 3rd century BC

  • 4. 
    People tried for centuries to “square the circle”.  What were they trying to do?
    • A. 

      Construct a square that perfectly circumscribes (surrounds) a given circle

    • B. 

      Determine the value of pi squared

    • C. 

      Multiply a circle by itself

    • D. 

      Use a straightedge and compass to construct a square exactly equal in area to a given circle

    • E. 

      Alter a recipe intended for a round pan so that it would fit exactly into a square pan

  • 5. 
    Some people became mentally deranged when trying to “square the circle”.  What was this illness named?
    • A. 

      Impossibilius Fittus

    • B. 

      Morbus Cyclometricus

    • C. 

      Repetitionatis Decimalus

  • 6. 
    Are pi’s digits periodic?  In other words, do the digits ever repeat themselves in any pattern?
    • A. 

      Yes. The digits repeat themselves every 6,000,000 decimal places

    • B. 

      No. Every periodic number is rational, but pi is irrational

    • C. 

      Yes. Every infinitely long number repeats itself

    • D. 

      Perhaps. Not enough digits of pi have been calculated to know yet

  • 7. 
    • A. 

      Its digits cannot be rationed out evenly

    • B. 

      Nobody with sound judgement has anything to do with it

    • C. 

      It is a real number, but can’t be expressed as a ratio of two integers

  • 8. 
    What is the “formal” definition of pi?
    • A. 

      The surface area of a sphere of diameter 22/7

    • B. 

      3.1415926

    • C. 

      The radius of a circle

    • D. 

      A delicious dessert

    • E. 

      The ratio of a circle’s circumference to its diameter

  • 9. 
    Among the digits of pi currently known, the concentration of each of the digits 0-9 are pretty close to equal.  However, in the first 30 places of pi’s decimal expansion, which digit is completely missing?
    • A. 

      7

    • B. 

      2

    • C. 

      0

    • D. 

      8

  • 10. 
    • A. 

      2 ∏ feet

    • B. 

      2 ∏ r feet, where r is the radius of the earth

    • C. 

      ∏ r ^2 feet