Puzzle Nook Daily
Three books, three shelves
A red book, a blue book, and a green book occupy the top, middle, and bottom shelves. Each shelf holds one book.
- The red book is directly above the blue book.
- The green book is not on the top shelf.
Which book belongs on each shelf?
A small hint
There are only two ways for red to sit directly above blue. Test each arrangement against the second clue.
Answer and reasoning
Top: red. Middle: blue. Bottom: green.
If red were in the middle and blue at the bottom, green would have to be on top, contradicting the second clue. That leaves the other arrangement.