73) The word ABUSER is permuted in all possible ways and arranged in alphabetical order, what word will be there in 49th position?
a) ARBSEU
b) ARBESU
c) ARBSUE
d) ARBEUS

• b) ARBESU is d correct ans
  
• 10 years agoHelpfull: Yes(2) No(0)
• Dictionary form will be like A, B , E, R , S U
  But we need 49 th word so
  keep AB fixed the we get 24 arrangement of other 4 letters, then AE same 24 letters ..which makes as 48 ..the next letter will be AR everything in lexicographic order so ARBESU
• 9 years agoHelpfull: Yes(1) No(0)
• See words in APHABETICAL ORDER ARE
  A, B ,E,R,S,U
  If we fix A and rest letters(BERSU)can be arranged in 5! ways=120-->It crosses 49 and hence we need to fix B too.
  Now with A and B fixed...rest letters ERSU can be arraned in 4!ways=24
  SO 24 words can be reacged by AB...anythinghere
  Now if we move ahead of B...E comes So keeping
  A and E fiexed..remailning letters BRSU can be arranged in 24 ways.
  Total words formed=48 when A B/E have been take care of
  Now next in sequence after E is R
  Fixing A nd R...we need the first word in alphabetical sequence out of re,maining letters BESU....which is BESU
  hence 49th word= AR BESU
• 9 years agoHelpfull: Yes(0) No(0)