A father purchase dresses for his three daughters.The dresses are of same color but of different size. The dress is kept in dark room.What is the probability that all the three will not choose their own dress.

• Ans is 1/3.
  For he first girl: probability for not selecting correct dress is 2/3
  for the second girl: it is 1/2
  for the third girl: it is 1
  2/3*1/2*1=1/3
• 10 years agoHelpfull: Yes(46) No(4)
• ans= 1/3
  d1 d2 d3-- dress
  g1 g2 g3 -- girls
  for girl g1 probality of selecting wrong dress= 2/3
  here one dress is picked so only 2 are remainning...
  for girl g2= 1/2
  now, only one dress is remainning
  for g3 = 1
  1*1/2*2/3= 1/3
• 10 years agoHelpfull: Yes(8) No(0)
• there are 3 dresses total combinations which are favourable is 3!=6
  
  now dresses are first,second ,third
  girls are 1 2 3
  
  now 1st- third ,2-first,3-second or 1st-second 2nd-third 3 first
  
  only6 2 conditions are there so 2/6 =1/3
  
  
• 10 years agoHelpfull: Yes(3) No(0)
• let assume first girl select his dress so his probability is 1/3 and for not selecting correct dress probability is 1-(1/3)=2/3
  second girl select his correct dress so his probability is 1/2 and for not selecting correct dress probabilty is 1-(1/2)=1/2
  And the last girl has only one choice so his probability is 1
  Total Probability is = (2/3)*(1/2)*(1)=1/3
• 9 years agoHelpfull: Yes(3) No(0)
• 3 dresses are there.
  everyone can choose wrong dress 2 ways
  probability of choosing wrong dress on each case is 2/3
  total probability = 2/3 * 2/3 * 2/3 = 8/27
• 10 years agoHelpfull: Yes(2) No(11)
• 1/3
• 10 years agoHelpfull: Yes(2) No(2)
• Two chooses wrongly,
  (1/3*2*/3*2/3)*3=4/9
  three chooses wrongly,
  (2/3*2/3*2/3)=8/27
  Total probability = 4/9 + 8/27 =20/27
• 10 years agoHelpfull: Yes(1) No(2)
• ans is 1/3
  for the first girl there have 1 correct and 2 is not her own so probablity for not selecting correct is 2/3
  for 2nd girl is 1/2
  for 3rd girl is 1
  2/3*1/2*1=1/3
  
• 9 years agoHelpfull: Yes(1) No(0)
• 2/3 * 1/2 * 1 = 1/3 is the probability.
• 9 years agoHelpfull: Yes(1) No(1)
• ans : 1/3
• 10 years agoHelpfull: Yes(0) No(4)
• 3 daughters
  first daughter select a dress = 1/3* 2/3
  secound daughter select a dress = 1/3*2/3
  third daughter select a dress= 1/3*2/3
  total = 6/9=2/3
  now three will not choose their own dress
  1-2/3
  1/3
• 7 years agoHelpfull: Yes(0) No(0)