indefinite articles

Question 1

what do the indefinite articles mean?

Answer 1

a or an

Question 2

un

Answer 2

in front of nouns that strat with a vowel or most consonants. masculine.

Question 3

uno

Answer 3

in front of nouns that start with s + consonant, ps, pn, gn, x, y, z. masculine.

Question 4

una

Answer 4

in front of nouns that start with a consonant. feminine.

Question 5

un’

Answer 5

in front of nouns that start with a vowel. feminine.