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.
33. What effect does it have on the value of a letter to draw a line above it?
In most cases it increases its value a thousand times.
34. Is a line ever drawn beneath a letter for the same purpose?
In some instances it is.
35. What effect does it have on a letter as a numeral to repeat it?
Repeats its value as often as it is repeated.