All of us went through math classes, but what the math teacher didn't teach us is that odd numbers are better suited in (food) photography and styling. There is always a median, which makes a good center point on a photo. Look at the difference on the photos below. Another style I always see on print ads, especially for beers/wines or bottles, in general, is the mighty duck "V" with 5 bottles.

Odd numbers make a good center point

Even numbers- where should the eye focus on?