Only 1, since the order of the digits does not matter in a compbination. In a permutation, yes, but not combination.
los números
The Spanish word for "number" is "número." You would have to make it plural to mean numbers, so you would say "números."
Números enteros
1980
Tienes tres numeros.
50.000 is: cincuenta mil in Spanish. Commas are not used to separate numbers.
siete miles cuatrocientos veintiuno or in numbers, it would be the same
The ordinal numbers in Spanish are:primerosegundotercerocuartoquintosextoseptimooctavonovenodecimo
Las diez (y) veinte.
oun i think el uno (de octubre, for example)
As numbers: once, cuarenta As a time: Son las doce menos veinte.