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
- - - - -

Nine digits => two numbers => largest product


Best Answer phil1882, 04 August 2014 - 02:03 PM

Spoiler for solution
Go to the full post


  • Please log in to reply
11 replies to this topic

#1 bonanova

bonanova

    bonanova

  • Moderator
  • PipPipPipPip
  • 5840 posts
  • Gender:Male
  • Location:New York

Posted 03 August 2014 - 10:48 AM

Here are your digits: 1 2 3 4 5 6 7 8 9.

Using each of them exactly once,  form two numbers: for example, 314879 and 652.

What's the largest product two such numbers can have?

 

Spoiler for Clue


  • 0
The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

#2 wolfgang

wolfgang

    Senior Member

  • Members
  • PipPipPipPip
  • 777 posts
  • Gender:Male

Posted 03 August 2014 - 07:06 PM

Spoiler for simply


  • 0

#3 bonanova

bonanova

    bonanova

  • Moderator
  • PipPipPipPip
  • 5840 posts
  • Gender:Male
  • Location:New York

Posted 03 August 2014 - 08:41 PM

Spoiler for simply

 

Spoiler for Except


  • 0
The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

#4 kukupai

kukupai

    Junior Member

  • Members
  • PipPip
  • 30 posts
  • Gender:Female

Posted 03 August 2014 - 10:05 PM

Spoiler for what about


  • 0

#5 bonanova

bonanova

    bonanova

  • Moderator
  • PipPipPipPip
  • 5840 posts
  • Gender:Male
  • Location:New York

Posted 04 August 2014 - 12:14 AM

Spoiler for what about

 

Spoiler for OK but


  • 0
The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

#6 kukupai

kukupai

    Junior Member

  • Members
  • PipPip
  • 30 posts
  • Gender:Female

Posted 04 August 2014 - 12:36 AM

Spoiler for hmmm...


Edited by kukupai, 04 August 2014 - 12:39 AM.

  • 0

#7 kukupai

kukupai

    Junior Member

  • Members
  • PipPip
  • 30 posts
  • Gender:Female

Posted 04 August 2014 - 01:17 AM

Spoiler for a bit better


  • 0

#8 bonanova

bonanova

    bonanova

  • Moderator
  • PipPipPipPip
  • 5840 posts
  • Gender:Male
  • Location:New York

Posted 04 August 2014 - 06:21 AM

Sooooo close. Swap a single digit from each number and you have it.


  • 0
The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

#9 kukupai

kukupai

    Junior Member

  • Members
  • PipPip
  • 30 posts
  • Gender:Female

Posted 04 August 2014 - 01:59 PM

Spoiler for oehhh


Edited by kukupai, 04 August 2014 - 02:00 PM.

  • 0

#10 phil1882

phil1882

    Senior Member

  • Members
  • PipPipPipPip
  • 538 posts

Posted 04 August 2014 - 02:03 PM   Best Answer

Spoiler for solution

  • 1




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users