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 Number machine problem 1 (Posted on 2003-06-08)
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)

 Subject Author Date Answer Math Man 2014-06-23 20:32:09 Puzzle Solution K Sengupta 2008-06-05 03:25:28 answer K Sengupta 2007-09-05 23:32:27 re: solution Lawrence 2003-08-24 16:34:22 solution joy 2003-06-16 17:21:54 Category Placement? Brian Smith 2003-06-09 15:56:35 It is... John Tate 2003-06-08 11:18:11 My Solution Charlie 2003-06-08 10:35:49 re(3): Solution Gamer 2003-06-08 06:56:20 re(2): Solution Charlie 2003-06-08 05:02:57 re: Solution Gamer 2003-06-08 04:48:26 Solution Jun 2003-06-08 04:37:32

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