Results 1 to 7 of 7

Math Help - Need help with a question regarding darts...

  1. #1
    Newbie
    Joined
    Sep 2007
    Posts
    21

    Need help with a question regarding darts...

    A dartboard has two regions for earning points: 5 points and 7 points. What is the largest score that is impossible to earn?


    I don't understand this question at all!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by help1 View Post
    A dartboard has two regions for earning points: 5 points and 7 points. What is the largest score that is impossible to earn?


    I don't understand this question at all!
    you have to give us some constraints here. in theory, it is possible to earn an infinite amount of points if you played forever... in theory
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Sep 2007
    Posts
    21
    Quote Originally Posted by Jhevon View Post
    you have to give us some constraints here. in theory, it is possible to earn an infinite amount of points if you played forever... in theory
    I have been searching around, and I think the general acceptance is 3 turns. Would that just be 20?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by help1 View Post
    I have been searching around, and I think the general acceptance is 3 turns. Would that just be 20?
    well, if you're a perfect shot, and you can hit the 7 point region all three times, then the largest score you can earn in 3 tries is 3(7) = 21

    but that is too simple, i think there's something more fundamental missing from your question
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by Jhevon View Post
    well, if you're a perfect shot, and you can hit the 7 point region all three times, then the largest score you can earn in 3 tries is 3(7) = 21

    but that is too simple, i think there's something more fundamental missing from your question
    21=7,7,7
    20 - cannot be done with 3 darts

    but I think that is not the question. I think we should be thinking what is the
    largest number that cannot be writen in the form 7n+5m for some n,m in N.

    RonL
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by CaptainBlack View Post
    21=7,7,7
    20 - cannot be done with 3 darts

    but I think that is not the question. I think we should be thinking what is the
    largest number that cannot be writen in the form 7n+5m for some n,m in N.

    RonL
    Oh .. forgot to say we have done these multiple times before (postage problems and similar), a search should turmn up the answer.

    Like this one for example.

    RonL
    Last edited by CaptainBlack; September 11th 2007 at 10:28 AM.
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Newbie
    Joined
    Sep 2007
    Posts
    21
    Scratch the 3 turns part. Its as many turns as you wish.

    I think the answer is 23, but I want to have a way to actually solve it.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Winning at darts
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: February 1st 2010, 10:38 AM
  2. 101 in Darts
    Posted in the Math Challenge Problems Forum
    Replies: 3
    Last Post: May 20th 2006, 01:20 AM

Search Tags


/mathhelpforum @mathhelpforum