Final answer:
Spanish nouns are typically masculine or feminine based on their endings, such as -o for masculine and -a for feminine, with some exceptions. In the list provided, saludo, problema, doctor, dia, mapa, and autor are masculine, while actriz, cafeteria, mano, and supervisora are feminine.
Step-by-step explanation:
To determine the gender of Spanish nouns, we usually look at the word ending. Here are the genders of the given words:
- Masculine (M): saludo, problema, doctor, dia, mapa, autor.
- Feminine (F): actriz, cafeteria, mano, supervisora.
It's important to note that there are exceptions to the general rules for determining gender in Spanish nouns. For instance, some words that end in -ma like 'problema' or -pa like 'mapa' are actually masculine, and 'mano' is feminine despite not ending with the typical feminine -a. Also, professions or occupations ending in -or are masculine, but can be made feminine by changing the ending to -ora, like 'supervisora' from 'supervisor'.