View All num of num See all Photos Siemens PLM Software www.plm.automation.siemens.com Engaged Employer Overview Reviews Salaries Interviews Jobs Photos Benefits 238 Reviews 413 Salaries 51 Interviews Follow Add Interview Follow Add Interview Interview Question Software Engineer Interview Pune (India) Siemens PLM Software I remember a puzzle. There is cube of size 3x3x3 unit. All of its 6 faces are painted. you cut that cube into 27 cubes of 1x1x1 size of cubes. How many cubes will have no face painted. Tags: See more , See less 8 Answer Add Tags Answer Interview Answer 2 Answers ▲ 0 ▼ 1 Interview Candidate on Jun 2, 2011 ▲ 0 ▼ You will have 27 cubes build the structure in sections 9 cubes at a time. The first 9 form a side and all are painted. The middle section is all painted except for the one center piece. and the last outer wall is all painted. So, just the one center cube is not painted. JC on Apr 15, 2012 Interviews > Software Engineer > Siemens PLM Software Add Answers or Comments To comment on this, Sign In or Sign Up.