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Number machine problem 1 (Posted on 2003-06-08) Difficulty: 1 of 5
I have a number machine. I say x gives y if when x goes in, y comes out. For any numbers x and y, by "xy" I mean x followed by y. Here are my two rules.

1x gives x.
For example, 13 gives 3.
If x gives y, then 2x gives yy.
For example, 213 gives 33 since 13 gives 3.

What is a number that gives itself?

See The Solution Submitted by Tim Axoy    
Rating: 3.7000 (10 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionAnswerMath Man2014-06-23 20:32:09
SolutionPuzzle SolutionK Sengupta2008-06-05 03:25:28
answerK Sengupta2007-09-05 23:32:27
re: solutionLawrence2003-08-24 16:34:22
solutionjoy2003-06-16 17:21:54
Category Placement?Brian Smith2003-06-09 15:56:35
It is...John Tate2003-06-08 11:18:11
SolutionMy SolutionCharlie2003-06-08 10:35:49
re(3): SolutionGamer2003-06-08 06:56:20
re(2): SolutionCharlie2003-06-08 05:02:57
Solutionre: SolutionGamer2003-06-08 04:48:26
SolutionJun2003-06-08 04:37:32
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