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Finding the fixes (Posted on 2016-05-29) Difficulty: 4 of 5
Chose a positive integer N.
Repeatedly replace this number by the sum of the cubes of its digits.
Stop once the replacement left the number unchanged.

Show that the "fixed point result" is only one of five possible choices.

List them.

No Solution Yet Submitted by Ady TZIDON    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: computer solution and discussionCharlie2016-05-29 11:37:40
re: Stop me before I replace again!Charlie2016-05-29 11:27:58
Solutioncomputer solution and discussionCharlie2016-05-29 11:22:38
Stop me before I replace again!Steve Herman2016-05-29 11:06:07
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