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.father purchase dress for his 3 daughter.dress of same colour but diff sizes. the dress is kept in d dark room what is the probability that all 3 will not choose their own dress.

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suppose 1 2 3 is the correct order of dresses to be chosen
the chances are 1 2 3
1 3 2
2 3 1
2 1 3
3 1 2
3 2 1
so total 6 possibilities, out of those 6, in 5 cases all 3 will not choose their correct ones
so reqd prob is 5/6
11 years agoHelpfull: Yes(10) No(7)

if they'll take right choice is 1/3 probability for first one
1/2 probability for second one
1 probability for 3rd one
total probability is 1/2*1/3=1/6
to get wrong choice is 1- 1/6= 5/6
11 years agoHelpfull: Yes(8) No(1)

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