Three brothers—Tom, Dick, and Harry—each wear a uniquely colored hat: red, blue, or green. Tom is not wearing the red hat. The man in the blue hat is older than Harry. Dick is the youngest and does not wear the green hat. What color hat does Harry wear?
Green.
Dick is the youngest and doesn't wear green or blue (since blue belongs to someone older than Harry, and Dick isn't the oldest). So Dick wears red. Tom is not wearing red, so Tom must wear blue (as Dick has red). That leaves Harry with the green hat.
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.
More logic riddles
I have three U.S. coins in my pocket totaling 30 cents. None of the coins are quarters, and one of them is not a nickel. What are the three coins?
A bookshelf holds five volumes of an encyclopedia in order from 1 to 5, left to right. Volume 3 is immediately next to Volume 1. Volume 5 is to the left of Volume 2. Volume 4 is to the right of Volume 3. What is the correct order of the volumes from left to right?
In a secret society, members wear cloaks of three colors: Crimson, Azure, and Emerald. No two members standing next to each other in a ritual circle wear the same color. If Member 1 wears Crimson and Member 3 wears Emerald, and there are only 4 members total in the circle, what color must Member 4 wear?
A man pushes his car to a hotel and tells the hotel owner he is bankrupt. Why?
In a secret underground vault, a guard speaks only in direct truths on even-numbered hours, and only in absolute lies on odd-numbered hours. If the guard tells you, 'I lie on odd hours, and today is Tuesday,' what hour of the day is it right now?
A shepherd needs to cross a river with a wolf, a goat, and a basket of cabbages using a small boat that can only carry the shepherd and one item at a time. However, the wolf cannot be left alone with the goat, and the goat cannot be left alone with the cabbages. To successfully cross the river while keeping everything safe, what is the absolute minimum number of one-way boat trips the shepherd must make from start to finish?