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

Home > Numbers
Lucky seven (Posted on 2010-02-05) Difficulty: 4 of 5
A number N consisting of a string of sevens i.e. N=77777...7777, is divisible by 199. Find the last 4 digits of the quotient. No programming, please.

See The Solution Submitted by Ady TZIDON    
Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Hints/Tips My solution- errata Comment 5 of 5 |

Hi,

I made public the "lucky seven" solution and in the final lines interchanged  x and y and put capital C instead of c

SO:.......
 
 
"......Therefore d=3 and c=2
x=2*d=6
y=2*C=4
and the quotient's last figures are 6823."

should be:
 
,,,," Therefore d=3 and c=2
y=2*d=6
x=2*c=4
and the quotient's last figures are 6823."
 
All the rest is correct.
 
6823 is the answer.

 

Edited on March 12, 2010, 1:39 am
  Posted by Ady TZIDON on 2010-03-12 01:37:35

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 (3)
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