In how many ways seven letter between A & B can be arranged from alphabets so that there is no repetition?

• remaining letters other than A & B (26-2) =24
  24p7 for arrangement of seven letters btwn A & B and 2! for A & B itself
  ans:
  24p7*2!
• 10 years agoHelpfull: Yes(15) No(1)
• 24*23*22*21*20*19*18
• 10 years agoHelpfull: Yes(4) No(3)
• Between A and B 7 position can filled with 7 letter that can come from 24 different letter in 24p7 different way.And 7 letter can permute among themselves in 7! different way.And A and B can permute among them in 2! way.So total way 24p7*7!*2!.
• 10 years agoHelpfull: Yes(4) No(0)
• 24P7 *2
  first arrange 7 letters between a b. 24p7 ways
  then multiply by 2 because a and b can be interchanged
• 10 years agoHelpfull: Yes(2) No(1)
• Right Answer is 24P7*2*18!
  Cos we also have to arrange letters in between ie
  CDEFGHI
  DEFGHIJ
  .
  .
  .
  upto
  18.,
• 10 years agoHelpfull: Yes(1) No(1)