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50 - Digit Number (Posted on 2003-11-15) Difficulty: 3 of 5
A number of 50 digits has all its digits equal to 1 except the 26th digit. If the number is divisible by 13, then find the digit in the 26th place.

See The Solution Submitted by Ravi Raja    
Rating: 3.3333 (6 votes)

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  Subject Author Date
answerK Sengupta2008-03-20 09:46:36
SolutionSolutionPraneeth2007-09-11 08:20:38
Hints/Tipsre(2): Re so easy SECOND OPINION att :NKAdy TZIDON2004-02-11 07:24:20
re: Re so easyNK2004-02-10 19:03:12
Re so easyNK2004-02-10 18:13:08
Solution so easyAdy TZIDON2004-02-10 15:08:55
Correction to Another ApproachNK2004-02-10 11:21:08
Another ApproachNK2004-02-10 10:32:01
re: Digit numberRichard2004-01-24 17:51:29
SolutionDigit numberPurna2004-01-24 06:17:38
re: solutionRichard2003-12-31 13:22:37
solutionluminita2003-12-31 11:27:06
re(7): solutionRichard2003-11-23 12:24:27
re(6): solutionSilverKnight2003-11-23 02:11:44
re(5): solutionRichard2003-11-22 21:34:28
No SubjectRichard2003-11-22 21:31:34
re(4): solutionKirk2003-11-22 18:49:19
re: correctionKirk2003-11-22 18:39:12
correctionRichard2003-11-22 12:54:55
re(3): solutionRichard2003-11-21 17:48:09
re(2): solutionKirk2003-11-21 16:33:21
re: solutionRichard2003-11-20 20:35:49
re(6): a little more straightforwardTristan2003-11-20 19:31:37
re: A similar problem but perhaps a bit trickierRichard2003-11-20 17:47:15
re(3): A similar problem but perhaps a bit trickierKirk2003-11-20 17:17:18
re(2): A similar problem but perhaps a bit trickierKirk2003-11-20 17:13:45
re: A similar problem but perhaps a bit trickierCharlie2003-11-20 14:59:49
A similar problem but perhaps a bit trickierKirk2003-11-20 14:53:01
re(5): a little more straightforwardRichard2003-11-19 21:30:45
re(4): a little more straightforwardRichard2003-11-19 21:21:06
re(3): a little more straightforwardTristan2003-11-19 19:06:25
Solutionre(2): a little more straightforwardRichard2003-11-19 01:59:52
re: a little more straightforwardRichard2003-11-19 00:10:42
re: a little more straightforwardTristan2003-11-16 20:52:59
re: a little more straightforwardVictor Zapana2003-11-16 12:57:06
Solutiona little more straightforwardEric2003-11-16 01:07:26
SolutionLess thinking using extended precisionCharlie2003-11-15 11:46:40
SolutionsolutionCharlie2003-11-15 11:32:16
first thoughtsrerun1412003-11-15 11:06:34
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