HITEQUEST
technical interview Q & A for high-tech professionals
 
 
Interview Questions
Electronics Hardware
Computer Software
Intel screening questions
Quick Thinking Tests
General questions
Phone screening questions
Submit your Q or A

Resources
Technical articles
Technical discussion
Engineers share info
Resume and interview
How to get a job in Silicon Valley
How much are you worth on market?
Why you may need an agent

Break point
Written Exam
Logic Tests
Professional Test
Tomato company
Cup of coffee
How stock market works
Engineering jokes

About Hitequest
About Hitequest
Home page

 
 
 
 
 
 

 
=Quick Thinking Tests=

   
   


 
  Q: by Zack
There is a large cube that is composed of small sugar cubes. The large cube is 10 sugar cubes long, by 10 sugar cubes wide, by 10 sugar cubes high. How many sugar cubes are on the surface of the large cube?
 
 
 
 

 
 

A: by Zack

This is not really a hard question (although I got it wrong several times before I got it right due to nervousness). However, there is the hard way to solve it and the easy way to solve it.
 
Hard way:
 
Try to add up all the cubes on the surface.
 
So the top and bottom are each 10 x 10, which is 200. Two more sides are 8 x 10 (since you don't count the two edges already accounted for), which gives you 160. The last two sides are 8 x 8 giving you 128.
 
So the answer is 200 + 160 + 128 = 488
 
Easy way:
 
The number of cubes on the outside/surface is simply the total number of cubes minus the number of cubes on the inside.
 
Total cubes - inside cubes = outside cubes 10^3 - 8^3 = 1000 - 512 = 488
 


 
 
 

Submit your answer here

 
 
 
 
 
 
   
 
Do you know how much you are worth on the market?
If you stayed with the same company for a lengthy period of time, there is a big chance you are under-earning.
More...