PrepTest 69, Section 1, Question 7
Exactly six petri dishes�labeled dish 1 through dish 6�are to be stored in an otherwise empty refrigerator. There are three available shelves�the bottom shelf, the middle shelf, and the top shelf. The placement of the dishes must be consistent with the following conditions:
Exactly six petri dishes�labeled dish 1 through dish 6�are to be stored in an otherwise empty refrigerator. There are three available shelves�the bottom shelf, the middle shelf, and the top shelf. The placement of the dishes must be consistent with the following conditions:
Exactly six petri dishes�labeled dish 1 through dish 6�are to be stored in an otherwise empty refrigerator. There are three available shelves�the bottom shelf, the middle shelf, and the top shelf. The placement of the dishes must be consistent with the following conditions:
Exactly six petri dishes�labeled dish 1 through dish 6�are to be stored in an otherwise empty refrigerator. There are three available shelves�the bottom shelf, the middle shelf, and the top shelf. The placement of the dishes must be consistent with the following conditions:
No more than three dishes are stored on any shelf.
Dish 2 is stored at least one shelf above dish 6.
Dish 6 is stored either one shelf above or one shelf below dish 5.
Dish 1 is not stored on the same shelf as dish 4.
If dish 6 is the only dish stored on the bottom shelf, which one of the following could be the list of dishes that are stored together on the middle shelf?
dish 1, dish 3
dish 2, dish 4
dish 2, dish 3
dish 3, dish 5
dish 4, dish 5
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