Vermenigvuldiging van twee ewe getalle gee altyd 'n ewe getal, dus is x maal 2 altyd 'n ewe getal. Die bytel van 'n onewe getal (y) by daardie ewe getal gee altyd 'n onewe getal.
Multiplication of two even numbers always produces an even number, so x multiplied by 2 is even. Adding an odd number (y) to that even number always produces an odd number.