12 Picture cards in a deck
12 picture cards in a deck
4 Doors Per Car
This may no longer apply but the Ditloid answer is 12 Provinces of Canada.NOTE There used to be 10 provinces and 2 territories - now increased to 3.
4 Cardinal Points of the Compass
If we're talking strictly algebra. 12 equals p of c can be written as:12= p(c) meaning, 12 is the answer for some function p, when c is the variable.