Jump to content


Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.

Of course, you can also enjoy our collection of amazing optical illusions and cool math games.

If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.

Thanks and enjoy the Den :-)
Guest Message by DevFuse
 

Photo
- - - - -

finding a needle in a haystack


  • Please log in to reply
5 replies to this topic

#1 BMAD

BMAD

    Senior Member

  • Members
  • PipPipPipPip
  • 1664 posts
  • Gender:Female

Posted 13 May 2013 - 01:11 AM

You were having fun playing with your red and blue balls each identical in weight and type with diameters of 4 inches. Some other person snatched your five balls and through them into the top of a large bin. The bin was 10 feet tall and full of 1000 large balls each with diameter of 2 feet. The bin has a unique function in that every time it receives five balls (regardless of size and weight) the bin closes and shakes violently for five minutes.

1. Assuming the bin was full of these large balls where the tops of the balls matched the top of the container and each ball touches the other balls without bending, how wide is the container? (A range of possible answers will suffice, if necessary)

2. To get your balls back you must ask the technician where they are located, these technicians are easilly bored and will not look far from precisely where you tell them. Where is the best place to have them open the bin to find your balls? (Assume that no balls fall out when the container is open)
  • 0

#2 Rob_Gandy

Rob_Gandy

    Advanced Member

  • Members
  • PipPipPip
  • 175 posts
  • Gender:Male
  • Location:Garland, TX

Posted 13 May 2013 - 08:24 PM

Spoiler for Well for starters


  • 0

#3 BMAD

BMAD

    Senior Member

  • Members
  • PipPipPipPip
  • 1664 posts
  • Gender:Female

Posted 13 May 2013 - 08:31 PM

Spoiler for Well for starters

Are both of these ways possible with the given information?


  • 0

#4 BMAD

BMAD

    Senior Member

  • Members
  • PipPipPipPip
  • 1664 posts
  • Gender:Female

Posted 13 May 2013 - 09:39 PM

I forgot to mention that this bin is a cylinder


  • 0

#5 TimeSpaceLightForce

TimeSpaceLightForce

    Senior Member

  • Members
  • PipPipPipPip
  • 603 posts
  • Gender:Male

Posted 14 May 2013 - 11:45 AM

Spoiler for


  • 0

#6 TimeSpaceLightForce

TimeSpaceLightForce

    Senior Member

  • Members
  • PipPipPipPip
  • 603 posts
  • Gender:Male

Posted 14 May 2013 - 04:36 PM

Spoiler for princess peas


  • 0




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users