Serial Killer
Provided by Cam.
Given the following series: 56__194__442__848__1484__2446__3854__?
What is the number corresponding to the 8th term, the 42nd term and the 200th term ?
Given the following series: 56__194__442__848__1484__2446__3854__?
What is the number corresponding to the 8th term, the 42nd term and the 200th term ?
Labels: mathschallenge
posted by Chris at
4:57 PM
13 Comments:
Is the 8th number in the set 5852?
the 42nd term is 3,038,070
I beleieve the 200th term is 1,585,682,204
Zaux,
You got the 8th good work.
I suspect you got the 42nd but made a typo. It is very close to what you posted.
200th should be trivial, or is it ?
Cam
P.S.
Thanks to Chris for posting puzzle for me
42nd is 3,038,074
You got it Zaux,
Too easy for you.
Cam
I get similar to Zaux.
8th is 5852
42nd 3038074
200 th 1585682204
You got it too Chris. Good work.
Cam
4 + 11 x + 42 x^2 - 2 x^3 + x^4
I bet you weren't expecting it to be done so quickly.
Mathematica helped me to solve it after the difference table showed me it was a quartic.
Above formula on assumption that x = 1 => 56 so that it is easy to associate x with the term in the sequence.
what is did was post the series in wolframalpha ... it showed the next number in the series, the formula, and a graph which revealed that 1,2,3,etc. plugged into the formula determined the series
LOL. Thanks for that Zaux. I had no idea that wolframalpha could do that. That's really useful info.
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