How can I create a table to lookup values for combinations of varying sized sets of numbers?
I'll try with a table structure this way:

create table packaging_group
(
    pack_group_id int primary key,
    product_id int foreign key references products(product_id),
    packaging_id int foreign key references packages(package_id)
);


No matter how many groups and how many products fit a package. You can always add/remove products to an specific package.