'une classe' is a feminine noun in French.
Feminine
masculine
La salade is feminine
feminine
Feminine
masculine
In French the country Mali is masculine.
balle is feminine in french / ballon is masculine
In French, "croissant" is a masculine noun.
Cours in French is feminine when it is the plural of cour ("court of justice," "courtship," "courtyard"), masculine when it is a synonym for "(school) class," and neither when it is part of the conjugation of the verb courir ("to run").
It's masculine. Beef in French is le boeuf.
Course (race) is femenine: une course, la course. Cours (as in class) is masculine: un cours, le cours.