19. _What is the value of N as a Numeral?_
In the Greek notation, 50; Roman, 90; and by some other, 900.
20. _What is the Numerical value of O?_
70 in the Greek; and 11 in the Ancient Latins.
21. _What is the Numerical value of P?_
In the Greek notation, 5; in the Latin, 80; and in the Roman, by
some authors, 7, by one, 100, and by still another, 400.
22. _As a Numeral, what is the value of Q?_
500.
23. _By whom used?_
Several of the Ancient Nations of Europe.
24. _What is the Numerical value of R?_
80
25. _By whom used?_
The ancient Romans.
26. _What is the Numerical value of S?_
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?_
7 in the Greek notation; and 2,000 in the Roman.
32. _Why have J, U, W, and Y no Numerical values?_
Because they have been introduced into the Alphabet since the
Science of Arithmetical Notation was invented.
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