[Spanish] How do you know when to use “unos” and “unas”?

Question by Sakya: [Spanish] How do you know when to use “unos” and “unas”?
How do you know when to use “unos” and “unas”?
“Somos chicos”. Why you don’t say “somos unos chicos”?
EDIT:
I know “unos” is masculine and “unas is feminine”. I just want to know whent I must to use them or not.

Anonymous, how do I call a person who answer to a stupid question?

Best answer:

Answer by Emily Love
im pretty sure unos masculine and unas feminine but i dont really no

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