In how many ways you can form a sandwich from yellow,blue,white,red color such that no two adjacent color are same.

• since no two adjacent should be same.
  so for 1st position 4 choices
  for 2nd it is 3
  for 3rd since it will not repeat color of 2nd but can repeat the 1st so 3.
  same as for 4th it will be 3
  thus answer is 4*3*3*3=108.ans
• 9 years agoHelpfull: Yes(56) No(0)
• i m sorry i did calculation mistake its 108 ways ,...4*3*3*3
• 9 years agoHelpfull: Yes(4) No(0)
• total is 4 colours
  there fore in 4 * 3* 2= 24 ways
  
  
  
  
• 9 years agoHelpfull: Yes(3) No(12)
• we have four position and arranging four color
  1st position 4 color place
  2nd position 3 color place
  3 rd position 3 color place
  4th position 3 color place
  so no of ways =4*3*3*3 =108 ways
• 8 years agoHelpfull: Yes(2) No(0)
• the previous ans has not been posted properly
  24 ways
  
  Y B W | B Y R | R B W | W R Y
  Y B R | B Y W | R B Y | W R B
  Y W B | B R Y | R Y B | W Y B
  Y W R | B R W | R Y W | W Y R
  Y R B | B W R | R W Y | W B Y
  Y R W | B W Y | R W B | W B R
  
  Y- yellow, R -red, W- white, B- blue
• 9 years agoHelpfull: Yes(1) No(5)
• No of ways = 4!= 24
  because we have to arrange 4 different things. so it will be 4P4 = 4!=24
• 9 years agoHelpfull: Yes(1) No(4)
• Answer is 36
  I II III 3 layers of sandwich
  
  first place can be any of the 4 colors, so I
  second place can be any color EXCEPT the first i.e I ....... so (4-1) = 3
  third place can be any color EXCEPT the second one........ so (4-1) = 3
  Kindly note : condition is ADJACENT SHOULD NOT BE SAME i.e. I and III layer can be same
  
  Therefore 4*3*3 = 36 Ans
• 8 years agoHelpfull: Yes(1) No(2)
• 4+3+2+1=10 ways
• 9 years agoHelpfull: Yes(0) No(5)
• 24 ways
  
  Y B W B Y R R B W W R Y
  Y B R B Y W R B Y W R B
  Y W B B R Y R Y B W Y B
  Y W R B R W R Y W W Y R
  Y R B B W R R W Y W B Y
  Y R W B W Y R W B W B R
  
  Y- yellow, R -red, W- white, B- blue
• 9 years agoHelpfull: Yes(0) No(2)
• in this case we directly take 4! ie 24
  so 24 ways is the ans
• 9 years agoHelpfull: Yes(0) No(8)
• Ans will be 18 ways
• 9 years agoHelpfull: Yes(0) No(3)
• 144
  we can write like this
  if we take firstly yellow colour
  Y_Y_
  yellow we can take in 4 ways but next colour should be taken in three ways becz we can't take yellow
  4*3*4*3=144
• 7 years agoHelpfull: Yes(0) No(0)
• 108
  4*3*3*3=108
• 7 years agoHelpfull: Yes(0) No(0)