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?