Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

johnny5520

  • 2 years ago

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.)

  • This Question is Closed
  1. shaan_iitk
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4c1*6c1/(8c3) = 0.429 .. check the answer as I have calculated in mind.. but the method is correct

  2. johnny5520
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    got the same thing, can u stay on got a couple mroe questions to go

  3. shaan_iitk
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    shoot!!!!

  4. shaan_iitk
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    but be quick.. have a n extra class today .. :(

  5. johnny5520
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 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

  6. shaan_iitk
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 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...

  7. johnny5520
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok got it

  8. shaan_iitk
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 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)

  9. shaan_iitk
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hope this is clear?

  10. darlee001
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @shaan can u upload a photo of the answer to d first quest?

  11. darlee001
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    with all steps

  12. darlee001
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    with all steps

  13. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.