Answer:
5. kitkat
6. B4
7. the machine was either switching between snacks or its a malfunction. stickers also may have been messed with
8. possibly? im not sure what the question is exactly asking but i would assume so
9. no it just means snacks are in two different places but sometimes yes it could be a malfunction
10. then it is not a problem. they use the same input and get the same output.