Hard Math trivia

Hard Math Trivia! It says what it is in the title.
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1
What is the correct mathematical name of this: - (it is a division bar)
  • Vinculum
  • Virgule
  • Obelus
  • Octothorpe
    • 2
    What is the correct mathematical name of this: # (a hash or number sign)
  • Vinculum
  • Virgule
  • Obelus
  • Octothorpe
    • 3
    What is the correct mathematical name of this: / (division slash)
  • Vinculum
  • Virgule
  • Obelus
  • Octothorpe
    • 4
    What is the correct mathematical name of this: ÷ (division sign)
  • Vinculum
  • Virgule
  • Obelus
  • Octothorpe
    • 5
    What digit did Arab mathematician al-Khwarizmi give to the West around 800 B/B.?
  • Zero
  • One
  • Two
  • Three
    • 6
    What two letters are both symbols for 1,000?
  • K and T
  • T and M
  • K and M
  • M and O
    • 7
    What century did mathematicians first use plus and minus signs?
  • Sixteenth
  • Seventeenth
  • Egighteenth
  • Fifteenth
    • 8
    What number, a one followed by 100 zeros, was first used by nine-year-old Milton Sirotta in 1940?
  • Googol
  • Trillion
  • Zillion
  • Nillion
    • 9
    How many equal sides does an icosahedron have?
  • Ten
  • Twenty
  • Twenty Five
  • Thirty
    • 10
    What number does "giga" stand for?
  • A million
  • A billion
  • A googol
  • A trillion
    • Unanswered questions will be marked as wrong

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