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permutations and combinations
by durgesh pandey - Saturday, 6 September 2014, 09:38 AM
  from abcdefghij....xyz. how many such arrangements are possible that abcdefghij always comes before vwxyz?
Re: permutations and combinations
by robin catch - Sunday, 7 September 2014, 10:22 PM
  is it 13!
consider block abcdefghij -10- 1 unit
block vwxyz-05 - 1 unit
remaining 13 alphabets
hence 1klmnopqrstuvw1
in this mode already the required condition is met
hence 13! arrangements
Re: permutations and combinations
by robin catch - Sunday, 7 September 2014, 10:23 PM
  dear tg pls do reply