Tristan, a math student from New York, introduces himself and discusses the Roman numeral system, which is still used today. He explains that 'C' represents 100 and 'X' represents 10, then poses a question about the numeral 'XIX'. The video concludes with encouragement to solve the problem.

Who is introducing themselves in the video?

• John from Sydney

• Maria from Rome

• Alex from London

• Tristan from New York

What does the Roman numeral 'C' represent?

• 50

• 1000

• 500

• 100

Which Roman numeral is used to represent the number 10?

• X

• L

• D

• V

What is the value of the Roman numeral XIX?

• 15

• 11

• 21

• 19

In the context of Roman numerals, what does the numeral 'X' stand for?

• 5

• 10

• 100

• 50