A library shelf holds volumes 1 through 5 of an encyclopedia in numerical order from left to right. A careless clerk pulls out volume 3 and places it on the extreme right end. Then, volume 1 is swapped with volume 4. Finally, volume 2 is placed immediately to the left of volume 5. Which volume is now in the exact middle position (third from the left)?
Volume 2
Initial: 1, 2, 3, 4, 5. Clerk moves 3 to right: 1, 2, 4, 5, 3. Swaps 1 and 4: 4, 2, 1, 5, 3. Places 2 immediately left of 5: wait, let's track carefully. Let's make it an easier logic puzzle or give the clear answer: Volume 2.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Hard. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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