Every time I do the weekly shop I buy breadbuns to make sandwiches with during the week. They come in packs of 6. I slice them and put them in bags of 4 so that we can just get them out each night and make 2 sandwiches each for the next day. Today I bought 2 packs of 6, so 12 buns, 3 bags of 4. Except I have just done the last bag and there are only 3 in that bag
. I am sure I would have noticed if one pack had originally only had 5 in. but I can't find it anywhere