question_answer

Little wooden cubes each with a side of one inch are put together to form a solid cube with a side of three inches. This big cube is then painted red all over on the outside. When the big cube is broken up into the original little ones, how many cubes will have paint on two sides?

A)  4                    

B)  8

C)  12                   

D)  0

Correct Answer: B

Solution :

[b] 4 cubes each of the first and third layers will have Paint on two sides only. Therefore, total number of cubes having paint on two sides. \[=4\times 2=[8]\]