Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

sunshnee8 Group Title

Find the probability P(prime sum when tossing 2 dice). Write in fraction form. Please explain. Thanks

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. AccessDenied Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    It would be helpful if we knew all the possible sums of the dice. I think it is easiest to use a table with numbers 1-6 on the top row and 1-6 on the left column, and just compute all the sums. Then we can easily see all the prime sums from the table. |dw:1349635556005:dw|

    • 2 years ago
  2. AccessDenied Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1349635743681:dw| Completed Table ^

    • 2 years ago
  3. AccessDenied Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1349635839214:dw| So, you can see all of the prime sums on the table: The probability from there is just (# of primes)/(total entries in the table)

    • 2 years ago
  4. sunshnee8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I tried that and I missed a few sums. Your table makes it more clear. Thank you. very much. So it would be 15/36 reduced into 5/12 correct?

    • 2 years ago
  5. AccessDenied Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes. :)

    • 2 years ago
  6. sunshnee8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you!!!

    • 2 years ago
  7. AccessDenied Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    You're welcome!

    • 2 years ago
    • Attachments:

See more questions >>>

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.