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johnny5520
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A room contains 4 married couples. 3 people are randomly selected. The probability that there is a married couple among the selected people is.......(Write your answer in the form 0.xxx, rounded up to the third digit.)
 2 years ago
 2 years ago
johnny5520 Group Title
A room contains 4 married couples. 3 people are randomly selected. The probability that there is a married couple among the selected people is.......(Write your answer in the form 0.xxx, rounded up to the third digit.)
 2 years ago
 2 years ago

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shaan_iitk Group TitleBest ResponseYou've already chosen the best response.0
4c1*6c1/(8c3) = 0.429 .. check the answer as I have calculated in mind.. but the method is correct
 2 years ago

johnny5520 Group TitleBest ResponseYou've already chosen the best response.0
got the same thing, can u stay on got a couple mroe questions to go
 2 years ago

shaan_iitk Group TitleBest ResponseYou've already chosen the best response.0
shoot!!!!
 2 years ago

shaan_iitk Group TitleBest ResponseYou've already chosen the best response.0
but be quick.. have a n extra class today .. :(
 2 years ago

johnny5520 Group TitleBest ResponseYou've already chosen the best response.0
if i was to do this by using probability, i.e 1/8 * 1/8 *1/8 or something what would be the way
 2 years ago

shaan_iitk Group TitleBest ResponseYou've already chosen the best response.0
this is through probability right?? .. after all probability is Number of arrangement with restriction/All arrangements possible > This is only formula that you have in probability... everything else is derived from this ... thats the beauty of the subject...
 2 years ago

johnny5520 Group TitleBest ResponseYou've already chosen the best response.0
ok got it
 2 years ago

shaan_iitk Group TitleBest ResponseYou've already chosen the best response.0
okk lets keep it this way ... 1st probability that you would find 1 person (he may or may not be a couple)  > 1 now we have two cases for the second selection > second person selected is the other partner of the 1st person > if it is then we need to have the third person anyone if it is not then we need to have the third person as the other partner of either of the two .. =(1/7 + 2/7)
 2 years ago

shaan_iitk Group TitleBest ResponseYou've already chosen the best response.0
hope this is clear?
 2 years ago

darlee001 Group TitleBest ResponseYou've already chosen the best response.0
@shaan can u upload a photo of the answer to d first quest?
 2 years ago

darlee001 Group TitleBest ResponseYou've already chosen the best response.0
with all steps
 2 years ago

darlee001 Group TitleBest ResponseYou've already chosen the best response.0
with all steps
 2 years ago
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