15/16. I got the cake wrong, it looked real to me, but the one before it was also a photo I think, and I sort of overthought it, assuming they wouldn't have 2 in a row or something.
The other one that gave me pause was the creme brulee, good one that, but the reflections on the sugar top gave it away...
Still, I think none of these (nor the other set at same place) are as hard as the current Autodesk challenge:
http://area.autodesk.com/fakeorfoto/That's more about careful image selection though, like some very stylized, non-photoreal stock images.
- Oshyan