Latest TCS Aptitude Question SOLUTION: 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 ?? ple

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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 !

Asked In TCS (11 years ago)

Unsolved Read Solution (15)

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Read Solution (15) :

divya arora  (11 years ago)

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

Is this solution Helpfull? Yes (43) | No (6)  

seraj (NIET)  (11 years ago)

4 cubes, one face painted form on the old cube and there are six faces so
6*4=24 (answer )

Is this solution Helpfull? Yes (18) | No (4)  

niki  (11 years ago)

but in tcs portal ans is 48.. wht shld we select in exam..?

Is this solution Helpfull? Yes (4) | No   

Sneha paliwal  (11 years ago)

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

Is this solution Helpfull? Yes (3) | No (4)  

Pallavi Barjatiya  (11 years ago)

thanku divya :)

Is this solution Helpfull? Yes (3) | No (1)  

piyushkumar  (11 years ago)

according to formula given by Divya Ans is 48 .. is formula correct.. totaly confused...!!

Is this solution Helpfull? Yes (3) | No (1)  

Surbhi Sharma  (11 years ago)

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

Is this solution Helpfull? Yes (2) | No (1)  

mukesh gupta  (11 years ago)

this question is based on visulization of cube

Is this solution Helpfull? Yes (1) | No (3)  

yamuna  (11 years ago)

(6*4)=24
only 4 cubes will get the exactly one side painted.

Is this solution Helpfull? Yes (1) | No (1)  

packiyalakshmi  (11 years ago)

http://techcseblog.blogspot.in/2012/09/tcs-open-sesame-questions-with.html

in this blog the answer given is 48. which one is correct?

Is this solution Helpfull? Yes (1) | No (3)  

sandeep  (11 years ago)

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????

Is this solution Helpfull? Yes | No (1)  

prachitrivedi  (11 years ago)

divya thankyou for giving this useful formula

Is this solution Helpfull? Yes | No   

snehil  (11 years ago)

48 is correct ans

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vipin jain  (11 years ago)

ANS IS 48 ACCORDING TO TCS SITE

Is this solution Helpfull? Yes | No (2)  

srija  (9 years ago)

plzzzzzzzzzzzzz

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