Question
Logical Reasoning Question on Numeric Grid
A cube is to be coloured in such a way as to avoid the same colour on adjacent surfaces. What is the minimum number of colours you will require ?
A
Four
B
Three
C
Six
D
Nine
Answer
Three
Explanation
Solution
The correct option is (B): Three
Explanation To color a cube such that no two adjacent faces share the same color, you can achieve this with a minimum of three colors. This is because a cube can be thought of as a planar graph, and according to the four color theorem, three colors are sufficient for the cube as each face can be colored in a way that no two adjacent faces have the same color.