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Move the 3, Triple the number (Posted on 2004-03-01) Difficulty: 2 of 5
If you moved the 3 at the end of a certain large number to the beginning, it would be the same as multiplying it by 3. What is the number?

  Submitted by Gamer    
Rating: 3.2000 (5 votes)
Solution: (Hide)
1,034,482,758,620,689,655,172,413,793

Figuring this from right to left is one method:

3 x 3 + 0 = (0)9
9 x 3 + 0 = (2)7
7 x 3 + 2 = (2)3
3 x 3 + 2 = (1)1
1 x 3 + 1 = (0)4

continuing on until:

3 x 3 + 1 = (1)0
0 x 3 + 1 = (0)1
1 x 3 + 0 = (0)3

Since we are at (0)3, we are back where we started from, so this must be the answer.

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionPuzzle SolutionK Sengupta2008-03-21 12:59:35
answerK Sengupta2007-06-28 23:01:10
re(2): complete set of answers, mathy reasoning *** correction #2empraptor2004-03-04 14:31:13
re(2): Standard solutionFederico Kereki2004-03-04 11:37:01
re: complete set of answers, mathy reasoning *** correctionempraptor2004-03-04 03:44:36
complete set of answers, mathy reasoningempraptor2004-03-04 03:33:39
re(5): Standard solutionRichard2004-03-02 19:34:22
re(4): Standard solutionCharlie2004-03-02 15:46:41
re(3): Standard solutionRichard2004-03-02 11:50:29
Solutionre(2): Standard solutionCharlie2004-03-02 08:34:50
re: Standard solutionRichard2004-03-02 01:10:08
SolutionStandard solutionFederico Kereki2004-03-01 12:00:48
SolutionLonghand...DJ2004-03-01 11:52:19
re: another method--computer-assistedCharlie2004-03-01 10:49:02
Some ThoughtsLET'S FIND ITAdy TZIDON2004-03-01 10:45:05
Solutionanother method--computer-assistedCharlie2004-03-01 10:44:05
Solutionretiarius2004-03-01 10:32:08
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