7

27. By whom used?

The Ancients.

28. Give the values of T as a Numeral.

300 in the Greek notation; in the Latin, 160.

29. What is the Numerical value of V?

5 in the Roman notation.

30. What are the values of X as a Numeral?

In the Roman, 10; in the Greek, 60.

31. What are the Numerical values of Z?