Question

How mny cubes have only two faces painted?

• A. $18$
• B. $24$
• C. $36$
• D. $25$
• E. $8$

Answer 1

The correct option is D $25$

In this question X=10X=10 and x=2x=2
Such cubes are 12(102−2)=12×3=3612(102−2)=12×3=36. Hence (c).