The principles of Latin grammar; comprising the ... - Essan.org

§ 24 NUMEKAL ADJECTIVES. 59Duo, two. and Tres, three, are thus declined :Plural. Plural. .Masc. Fern. Keut. Masc. Fern. Neut.N. duo, duae, duo, N. tres, tres, tria,G. duorum, duarum duorum, G. trium, trium, trium,D. duobus, duabus, duobus, D. tribus, tribus, tribus,Ac. duos, -o, duas, duo, Ac. tres, tres, tria,V. duo, duae, duo, V. tres, tres, tria,Ab. duobus, duabus, duobus, Ab. tribus, tribus, tribus,Ambo, both, is declined like duo.4. All the cardinal numbers, from quatuor to centum inclusive,are indeclinable; and from centum to mille, they aredeclined like the plural of bonus (98-1).5. Mi lie, when placed before a genitive plural, is a substantiveindeclinable in the singular ; in the plural, it is declinedlike the plural of sedlle (83-8) ; thus, millia, millium,millibus, &c. When it has a substantive in any other casethan the genitive plural joined to it, it is a plural adjectiveindeclinable ; as, mille homines, a thousand men ;bis milkhominihus, with two thousand men.ROMAN METHOD OF NOTATION BY LETTERS.6. The capital letters used by the Romans to denote numbers,were C, I, L, V, X, which are therefore called NumeralLetters. I, denotes one; V, five; X, ten; L, fifty, and C, ahundred. By the various combinations of these letters, allnumbers were expressed as follows :The repetition of a letter repeats its value ; thus, II signifiestwo ; III, three; XX, twenty ; XXX, thirty; CC, two hundred;CCC, three hundred, &c. V and L are never repeated.When a letter of less value is placed before another ofgreater value, the value of the less is taken from the greaterWhen placed after it, the value of the less is added to thegreater; thus,IV. Four, V. Five, VI. Six. 'IX. Nine, X. Ten, XI. Eleven.XL. Forty, L. Fifty, LX. Sixty.XC. Ninety, C. A hundred, ex. A hundred and ten