jayadev sirimamilla

• Jul 1st, 2006

 

1 side 81

2 side 60

3 side 8

Subhadip Mondal

• Apr 18th, 2007

 

No. of Cubes painted on 1 side = 2(4*6)+2(6) = 60.
No. of Cubes painted on 2 side = 2(4*6)+2(2*6)=72.
No. of Cubes painted on 3 side = (2*8)+(2*8)=32.

hareesh

• Jul 7th, 2007

 

there should be altogether 91 (64+27)  cubes.

1st cube..
no of cubes with no sides painted      = 8
no of cubes with 1 sides painted        = 6*(4 per side)=24
no of cubes with 2 sides painted        =8 on top+8 on bottom+8 in between
                                                              total=24
 no of cubes with 3 sides painted       =8(corners of cube) 


2nd cube
no of cubes with no sides painted      = 1
no of cubes with 1 sides painted        = 6*1=6
no of cubes with 2 sides painted        = 4*3=12
no of cubes with 3 sides painted        = 8



Total      
1 side painted cube       = 30
2 side painted cube       = 36 
3 side painted cube       = 16
0 side painted cube       =  9

GRAND TOTAL = 91

mohan_babu1986

 Profile Answers by mohan_babu1986 

• Aug 21st, 2009

 

No. of Cubes painted on 1 side 2(4*6)+2(6) 60.
No. of Cubes painted on 2 side 2(4*6)+2(2*6) 72.
No. of Cubes painted on 3 side (2*8)+(2*8) 32.

this answer is 100% correct

paul.anuj

 Profile Answers by paul.anuj 

• Sep 23rd, 2009

 

No of cubes painted on one side for 1st & 3rd cube= 2[6(n-2)^2] =2[6(4-2)^2] = 48
No of cubes painted on one side for 2nd & 4th cube=2[6(n-2)^2] =2[6(3-2)^2] = 12
                                                                 Total No of cubes painted on one side = 50.

No of cubes painted on two sides for 1st & 3rd cube= 2[12(n-2)] =2[12(4-2)] = 48
No of cubes painted on two sides for 2nd & 4th cube= 2[12(n-2)] =2[12(3-2)] = 24
                                                              Total No of cubes painted on one side = 48.

No of cubes painted on three sides for every cube will always be 8.
Hence Total No of cubes painted on three sides = 8*4= 24.


1st and 3rd cube has been cut into 64 pieses which is (n*n*n) hence n=4.
2nd and 3rd cube has been cut into 27 pieces. hence n=3.