MAT 2009 Question Paper

Question 108

A cube is to be coloured in such a way as to avoid the same colour on adjacent surface. What is the minimum number of colours you will require?

Solution

Since no two adjacent faces can have same color, any pair of two opposite faces can have same color.

Hence, minimum number of colours required = $$\frac{6}{2}=3$$

=> Ans - (B)


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