1,4,2,9,6,1,5,10,4
I-IV-II-IX-VI-I-V-X-1V
I-IV-IX-VI-I-V-X-1V-II is the palindrome
1,4,9,6,1,5,10,4,2 is the new configuration
>
> Change the position of one number only to make this a palindromic
> sequence: 1,4,2,9,6,1,5,10,4
> --
> Philip Carter
>
Scroll down for solution
Moving the "2" to the end of the sequence, yields
1,4,9,6,1,5,10,4,2
If it doesn't make sense right away, try a different perspective.
Write out the the original sequence in Roman Numerals
1,4,2,9,6,1,5,10,4 --> I IV II IX VI I V X IV --> IIVIIIXVIIVXIV
The new sequence is written this way
1,4,9,6,1,5,10,4,2 --> I IV IX VI I V X IV II --> IIVIXVIIVXIVII
______
-- / . _____ "Knowledge decreases when it ceases to increase."
___/ | | | | --Unknown
Can't we prove that it can't be done. Every element, may be except one, must
have even frequency in a palindromic sequence.
Am I missing something or you have a different definition in mind.
Maybe something in binary?
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Phil Desmarais
Email: pdes...@chat.carleton.ca
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