Question 1370
 Choose 4 among 5  Carmel types, there are C(5,4) = 5 =(5!/4!) possibilities
 Choose 5 among 7 chocolate types, there are C(7,5) = (7!/(5!2!)) 
 = 7*6/2 = 21 possibilities
 Choose 7 among 10  Dark chocolate types, there are C(10,7) = (10!/(7!3!)) 
 = 10*9*8/6 = 120 possibilities

  5 + 21 + 120 = 146

 Totally,there are 146 different assortments