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A Numeral Sequence Problem (Posted on 2006-11-07) Difficulty: 2 of 5
Change the position of only one number in the sequence given below in order that the amended sequence corresponds to a palindromic sequence.

1, 4, 9, 6, 2, 1, 5, 10, 4

*** Source: Adapted from a problem which appeared in Mensa Canada Website.

See The Solution Submitted by K Sengupta    
Rating: 4.5000 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution Another way | Comment 4 of 6 |
Just move the 6th number to the end:
1, 4, 9, 6, 2, 5, 10, 4, 1

Oh, wait, that's not quite a palindrome, it is?
Next remove most of the commas:

1, 4, 962510, 4, 1

I changed the position of only one number.  The instructions didn't say anything about what to do with the commas.  Tricks!
(depending on your definition of 'palindromic sequence')
Actually tomarken's is, I'm sure, the right answer.

Edited on November 9, 2006, 8:58 am
  Posted by Larry on 2006-11-09 07:20:35

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