All faces of a cube with an 8meter edge are painted red.if the cube is cut into smaller cubes with a 2 meter edge. how many of two meter cubes have paint on exacly one face ??
please explain in detail with ol the logics used. .

always confuesd in such type of cube questions !

• formulas are:
  for cube with all faces painted:
  if edge of the big cube is N, and of smaller cubes formed from it, each having an edge of n,
  1. then total number of small cubes formed from it are: (N/n)^3
  2. for 3 faces painted: Answer is 8 (always)
  3. for 2 faces painted: 12 X (N-2n)/n
  4. for 1 face painted: 6 X (N-2n)^2/n
  5. for 0 face painted: (N-2n)^3/n
• 11 years agoHelpfull: Yes(43) No(6)
• 4 cubes, one face painted form on the old cube and there are six faces so
  6*4=24 (answer )
• 11 years agoHelpfull: Yes(18) No(4)
• but in tcs portal ans is 48.. wht shld we select in exam..?
  
• 11 years agoHelpfull: Yes(4) No(0)
• ans exactly one face painted cube =24
  two side painted= 24
  3 side painted=8
  not painted= 8 .just draw cube in copy u can found answer
• 11 years agoHelpfull: Yes(3) No(4)
• thanku divya :)
• 11 years agoHelpfull: Yes(3) No(1)
• according to formula given by Divya Ans is 48 .. is formula correct.. totaly confused...!!
  
• 11 years agoHelpfull: Yes(3) No(1)
• farmula for cubes 1 side painted for a cube of edge n unit when cut with 1 unit edge =(n-2)^2*6
  here n=4 as it is cut wid 2 meter edge
  so ans=(4-2)^2*6=24
• 11 years agoHelpfull: Yes(2) No(1)
• this question is based on visulization of cube
  
• 11 years agoHelpfull: Yes(1) No(3)
• (6*4)=24
  only 4 cubes will get the exactly one side painted.
• 11 years agoHelpfull: Yes(1) No(1)
• http://techcseblog.blogspot.in/2012/09/tcs-open-sesame-questions-with.html
  
  in this blog the answer given is 48. which one is correct?
• 11 years agoHelpfull: Yes(1) No(3)
• i found the same answer 24 with cube having 8 meter edge and the smaller cubes having 1 m edge....doesnt the increase in size makes the difference????
• 11 years agoHelpfull: Yes(0) No(1)
• divya thankyou for giving this useful formula
• 11 years agoHelpfull: Yes(0) No(0)
• 48 is correct ans
• 11 years agoHelpfull: Yes(0) No(0)
• ANS IS 48 ACCORDING TO TCS SITE
• 11 years agoHelpfull: Yes(0) No(2)
• plzzzzzzzzzzzzz
• 9 years agoHelpfull: Yes(0) No(0)