The CBC has eleven slots for commercials during a special broadcast. Six restaurants and five
stores have bought slots for the broadcast. In how many ways can the commercials be arranged
so that the restaurants are grouped together and the stores are grouped together?

Question

The CBC has eleven slots for commercials during a special broadcast. Six restaurants and five 
stores have bought slots for the broadcast. In how many ways can the commercials be arranged 
so that the restaurants are grouped together and the stores are grouped together?

anonymous · Answer

Not quite sure how to approach this one, but based on the info given, since there are 6 restaurants and 5 stores, that's 11 right there.