Fedya has 4 red cubes, 3 blue cubes, 2 green cubes, and 1 yellow cube. He is building a tower ( see the picture ) in such a way that no two cubes touching each other have the same colour. What is the colour of the cube with the question mark ?
IKMC Grade 1 - 2
Câu hỏi liên quan
Five dragons named Dodo, Pepe, Ritchi, Buro and Fifi lived each in his own cave.
Dodo and Pepe had only one neighbour. Ritchi lived in the cavev with a triangle. Bruno did not tree in front of his cave. Pepe lives next to Bruno. Which cave did Fifi in ?