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Old MacDonald Had a Sequence (Posted on 2003-09-12) Difficulty: 5 of 5
What letter comes next in this sequence?

E, I, I, E, I, I, O, H, W, ?

See The Solution Submitted by Bryan    
Rating: 3.0000 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(4): solution | Comment 6 of 18 |
(In reply to re(3): solution by SilverKnight)

Sure it seems simple once you know the answer.. but don't tell me that the first think you thought of when looking at this sequence of letters is, "hmm.. those are the second letter in the spelling of the counting numbers descending from then, duh."
It may not be D5, but it's challenging enough, and I think certainly siteworthy in that respect.

My only complaint is that a scholar who first saw the problem days ago posted the answer two minutes after the problem was made live. I think that if that had been held off, a lot more good discussion would definitely have arisen from the problem.
  Posted by DJ on 2003-09-12 12:31:54

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