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This is a sqeunce, find the next letter:

JFMAM

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JJMAM...PBCP...??

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F

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then J ...

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DNO?

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Opps, sorry the sequence is JFMAM not JJMAM, and yes Arizona you are right, it is J after that, but can you tell why?

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I should of thought that was obvious!
Can you tell why dairygirl and I were following a correct sequence?

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sure I can tell! I told the question, by the way, after


JFMAM


is not F, it is J,
and any way here is why:


It is actually the first letter of months:


January, Feburary, March, April, May, June, July and ....

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but ... how come F comes next after JJMAM (as you originally posted)?

because JJMAM is the months going backward ... so February is next.

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I posted that I posted the sequence wrong the currect one is:

JFMAM ...

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yes ... but ... F was the still the correct answer ... that doesn't seem to be clear to you even now ... 8(

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January, Feburary, March, April, May, June, July, Where is F in there?

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When you first posed the problem you announced the sequence as "JJMAM". You have edited it since then but that was the problem as originally posed.

Now, start with J for July and work backwards. It should then be obvious that F is the right answer to the problem as originally posed.

(I can't believe how many times I've had to post to this forum, on such an inane and trivial matter. Am I going bonkers?)

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oh!, so sorry, but I did post that I posted the question wrong!

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But we managed to come up with a working solution.

Hell, we're good.

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yeah! Good job!

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any others?

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ffd

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335443554...

whats next?

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it could start repeating itself at that point.
the digit sequence is 3, 5, 4, 3, 5, 4, etc. then we also alternate between doubled digit and single digit xx, x, xx, x, xx, x, etc. we've cycled the digit sequence twice and the double/single sequence 3 times--they're each ready to start over

this is of course completely a guess