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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)

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Hints/Tips My solution- errata Comment 5 of 5 |


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

"......Therefore d=3 and c=2
and the quotient's last figures are 6823."

should be:
,,,," Therefore d=3 and c=2
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

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