In how many ways we can arrange letters from A to Z , when A and I can have
only seven letters between them?

• 24C7*7!*2!*17!
• 10 years agoHelpfull: Yes(34) No(4)
• 24 letter can be arrange in 24C7
  Arrangement of A and I = 2!
  Arrangement of letter betwn A and I = 7!
  Arrangement of remaining letter = 24-7=17!
  so requd and = 24C7*2!*7!*17!
• 10 years agoHelpfull: Yes(21) No(3)
• 2*18*24! this is the answer.
• 10 years agoHelpfull: Yes(8) No(1)
• 24C7*7!*2!*18!
• 10 years agoHelpfull: Yes(6) No(0)
• @arun nd @tejomoy...i thnk it wl be 18! instd of 17!.bcoz we have to take the set of 9 letters incldng A,I & other 7 as 1 letter so that the whl grp of 9 letters can change thr position.so i thnk it wl be 24c7*2!*7**18!....where 26-9+1=18
• 10 years agoHelpfull: Yes(6) No(1)
• 24!*38
• 10 years agoHelpfull: Yes(2) No(4)
• 24C7*7!*18!*2
• 10 years agoHelpfull: Yes(2) No(0)
• actually 2 ltr a,i chosen can be arranged by 2!, from(26-2)=24 letters 7 letters and so 24c7*7!*2!*17!
  http://www.youtube.com/playlist?list=PLFp56HbJTNIubVF6FxHFFJPjaZvuPIdmm this link may help you fr permutaion combination probabilty
  
• 10 years agoHelpfull: Yes(1) No(2)
• 2*18*24!
• 10 years agoHelpfull: Yes(0) No(1)
• 24C7*7!*2!*17!
• 10 years agoHelpfull: Yes(0) No(0)
• 24C7 *7! since out of 26 alphabets 24 alphabets have been fixed... and we are left with only 24 alphabets which can be selcted in 24C7 ways and these 7 alphabts can be arranged in 7! ways...
• 10 years agoHelpfull: Yes(0) No(0)
• 17*2!*24c7*7!*17!
• 10 years agoHelpfull: Yes(0) No(0)
• Answer = 18!*7!*2
  
• 10 years agoHelpfull: Yes(0) No(1)
• explain please....
• 10 years agoHelpfull: Yes(0) No(0)
• 24C17*18!*7!*2!
• 10 years agoHelpfull: Yes(0) No(0)
• 24C7*2*17!*18
• 10 years agoHelpfull: Yes(0) No(0)
• 2!*c(24,7)*17!*7!....
• 10 years agoHelpfull: Yes(0) No(0)