Five gears are linked in a straight row: Gear A drives Gear B, Gear B drives Gear C, and so on up to Gear E. If Gear A rotates clockwise, in which direction does Gear E rotate?
Clockwise.
Each adjacent gear reverses direction. A is clockwise, B is counter-clockwise, C is clockwise, D is counter-clockwise, and E is clockwise.
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: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
More logic riddles
I am sticky and sweet and wrapped in paper, and you collect me from neighbors' doors. What am I?
A train leaves Station A heading east at 60 mph. One hour later, another train leaves Station A heading west at 40 mph. How far apart are the two trains 2 hours after the second train starts moving?
I am hot and sweet and topped with marshmallows, and I warm you on a cold day. What am I?
A gardener plants four distinct flowers—a Rose, a Tulip, a Daisy, and a Lily—in a single straight row from left to right. The Rose is somewhere to the left of the Lily. The Daisy is planted immediately between the Tulip and the Rose. Which flower is at the far right of the row?
A merchant has a barrel of oil weighing 100 pounds. A customer draws out 20 pounds of oil. Later, the merchant pours 20 pounds of water into the barrel. Assuming oil floats on water and they don't mix inside the heavier liquid balance, does the barrel weigh more, less, or the same as when it started?
In a strange race, finishing second means you take the position of the person who was in first, while the original first-place runner drops to last. If there are five runners (A, B, C, D, E) and runner B overtakes runner A who is currently in first place, what position is runner A in now?