Fill in the blanks about definite and indefinite articles.

Desde la 16 es:
16.) Las
17.) un
18.) unas
19.) La
20.) un
21.) unos

En el verano cuando era nino mi gustaba mucho salir a jugar con mis amigos

These objects represent mayan numerals. just like roman numerals, they are combined to symbolize a numeral and this enabled astronomers, scholars and architects to compute various equations yet it was also used by farmers and traders in their day to day transactions.