Three shape cards—Circle, Square, and Triangle—are each painted a single color: Red, Blue, or Green. Each card has a different color. 1. The Circle card is not Red. 2. The Blue card is not the Triangle. 3. The Square card is Green. What color is the Triangle card?
Red
Square is Green. The remaining colors are Red and Blue for Circle and Triangle. Since the Blue card is not Triangle, Circle must be Blue. Therefore, Triangle must be Red.
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
Four travelers—Anna, Ben, Clara, and Dan—stayed at an inn. Each came from a different city (Paris, Rome, Tokyo, Berlin) and arrived on a different day of the week (Monday, Tuesday, Wednesday, Thursday). Anna did not come from Paris and did not arrive on Monday. The traveler from Rome arrived on Thursday. Ben arrived on Wednesday and came from Berlin. Dan arrived on Monday. The traveler from Tokyo arrived on Tuesday. Who came from Paris?
Five knights compete in a sword tournament. Sir Vance scored higher than Sir Uther. Sir Terry scored lower than Sir Quinn but higher than Sir Vance. Sir Ron scored higher than Sir Quinn. Who won first place in the tournament?
A lily pad on a quiet pond doubles in area every day. If it takes 48 days for the lily pad to completely cover the entire surface of the pond, on which day was the pond exactly half-covered?
A barrel of cider weighs 60 pounds. When a certain liquid is added to the barrel, the total weight drops to 40 pounds, yet the barrel remains completely full. What was added?
A merchant has a bag of 8 identical-looking gold coins, but one is counterfeit and weighs slightly less than the others. Using a balance scale with no weights, what is the minimum number of weighings required to guarantee finding the counterfeit coin?
Four suspects—Amber, Blake, Cody, and Dana—are questioned about a missing ring. Exactly one of them stole it. Amber says: 'Cody took the ring.' Blake says: 'I did not take the ring.' Cody says: 'Dana took the ring.' Dana says: 'Cody is lying.' If exactly one of these four statements is true, who stole the ring?