All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Just Math
Decode the double code (Posted on 2011-06-09) Difficulty: 4 of 5
I have multiplied two 3-digit numbers and coded the whole process twice:

In the 1st coding O replaces an odd digit and E the even.
   OOO
 * EOE
  OEOE
  OOO
 OEE  
 OOOEE 
In the 2nd coding S replaces a digit smaller than 6 and B a digit bigger than 5.
   SBB
 * SSB
  SSSB
  SSS
 BSB  
 BBSSB
Try to get my original numbers(digit 9 does not appear in the multiplication) and all other possible solutions, if any.

No Solution Yet Submitted by Ady TZIDON    
Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Not that hard (spoiler)-Ady reverts | Comment 6 of 7 |
(In reply to Not that hard (spoiler) by Steve Herman)

Hi, Steve

1. Assigning a degree of difficulty is a subjective task, usely controversial.

2. I  have "tested" my "double code" by asking two of my math-friends to solve it. It took them over 40 minutes each.

3. Apparently both of them are less gifted or less systematic
or both than you.

4. I agree that the solving is easy , once you grasp the fact that   all B&O dtigits are implicitly defined as 7.

5. Why no one rates this problem?
It is original, thought-provoking and leads to a single solution...

Regards

Ady


  Posted by Ady TZIDON on 2011-06-10 05:53:28
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (4)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information