Five children—Amy, Ben, Cole, Dan, and Ella—each have a unique number of marbles from 1 to 5. Ella has 1 marble. Dan has 4 marbles. Amy has more marbles than Ben, who has more than Cole. How many marbles does Ben have?
3 marbles
Ella has 1 and Dan has 4, leaving numbers 2, 3, and 5 for Amy, Ben, and Cole. Since Amy > Ben > Cole, Cole must have 2, Ben must have 3, and Amy must have 5.
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
You have four identical-looking coins, but one is counterfeit and weighs slightly less than the genuine three. Using a balance scale, what is the minimum number of weighings required to guarantee finding the counterfeit coin?
Five sisters are in a room together. Ann is reading a novel, Beth is playing chess, Carla is writing a story, and Daisy is doing laundry. What is the fifth sister, Ella, doing?
Four travelers sit around a circular campfire. Arthur says, 'The person to my left is lying.' Beatrice says, 'Arthur is telling the truth.' Charles says, 'Beatrice is lying.' Diana says, 'Charles is telling the truth.' Exactly one of these travelers is telling the truth, and the other three are lying. Who is the truthful traveler?
A mother is currently twice as old as her daughter. 10 years ago, the mother was three times as old as her daughter. How old is the daughter today?
Five knights stand in a circle. Each knight either always tells the truth or always lies. Knight 1 says, 'Knight 2 is a liar.' Knight 2 says, 'Knight 3 tells the truth.' Knight 3 says, 'Knight 4 is a liar.' Knight 4 says, 'Knight 5 tells the truth.' Knight 5 says, 'Knight 1 is a liar.' How many of the five knights are liars?
I have a head like a cat, feet like a cat, a tail like a cat, but I am not a cat. What am I?