15. _What is the Numerical value of I?_
1 in the Roman notation; and 100 in some of the Ancient notations.

16. _What is the Numerical value of K?_
20 in the Greek notation; and 60 in the Semitic.

17. _Give the Numerical values of L._
50 in Roman, and 30 in Semitic notation.

18. _What are the Numerical values of M?_
As a Roman numeral, 1,000; Greek and Hebrew, 40.

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?_