I was pondering this as I opened a box of my current preferred biscuits. Nairn's dark chocolate oatcakes. I know all of the Nairns come in packs of 5 but still.
I don't need 5. I mean I would happily eat 5 and I did in the end and there were 5 in the packet. I'm trying to shed a few pounds (or just be a bit better than normal in Jan). I would be absolutely fine with 3. But I had to eat the other 2 and always will due to lack of willpower. I wouldn't eat 3 then eat 2 more if they came in 3s.
It got me thinking about other food items where there are too many or too few. Too many crisps in a grab bag too but I'll always eat all of them because they are THERE.
Any other examples?