Zawadi is similar to the biblical word זבד (Ze-ved) which means gift (commonly used as gift/sacrifite to god)
How can you tell if zawadi za Rashidi is singular or plural?
The word za means it's plural. Singular it would be ya. Nous of this class are not themselves conjugated, but take different concords.
Zawadi covers singular and plural.How is one to know which is required in the answer?
by the connecting word "za" : for N/N class nouns, it is "ya" if the noun is singular, "za" if plural, see the N/N lesson's notes