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Stupid number trick IV (Posted on 2006-01-13) Difficulty: 3 of 5
Take any whole number greater than one.

1. If the number is odd, multiply it by three and add one.
2. If it is even divide it by two.
2a. If the result is still even, continue to divide by two until the result is odd.
3. Continue steps 1 and 2 until you get the same number twice.

[For example starting with 9 -> 28 -> 14 -> 7 which is considered one iteration. The next iteration brings this to 11.]

What number(s) does this process terminate at?
What starting value less than 200 takes the most iterations to terminate?

See The Solution Submitted by Jer    
Rating: 4.0000 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: any suggestions? Comment 23 of 23 |
(In reply to any suggestions? by Justin)

The program can't be mentioned 'Stupid number trick IV'.

It must be a name which carries more glory.  It deserves it, after having worked so long, up till 20 billion.  And a ceremony/funeral should be held.  Maybe somebody can even do a service in the chatterbox.

I wonder if more people think this is a good idea.


  Posted by Hugo on 2006-02-04 14:53:31
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