Question 1203621: What is the 7th term of the series 12, 6, 18,...
Found 3 solutions by josgarithmetic, greenestamps, ikleyn:
Answer by josgarithmetic(39630)   (Show Source):
Answer by greenestamps(13214)  (Show Source):
You can put this solution on YOUR website!
ALL problems like this, in which a finite sequence of numbers is given without any information about what kind of sequence it is, and we are expected to find next terms or perhaps a formula for the n-th term, are invalid.
Given any sequence of numbers with no information about the type of sequence, ANY following numbers will form a valid sequence.
This kind of problem is for entertainment purposes only. You can spend as much (or as little!) time as you want looking for a pattern that predicts subsequent numbers in the sequence; but you have no way of knowing whether any answer you come up with is "right".
Answer by ikleyn(52898)  (Show Source):
You can put this solution on YOUR website! .
In this post (and in hundreds other similar posts) a sequence IS NOT even DEFINED,
THEREFORE, the posed question makes no sense from the very beginning to the very end.
The correct answer is  :
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The very formulation of this problem is meaningless.
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Unfortunately, many different sources (written by mathematically
illiterate authors) continue publish such gibberish.
And no one apologizes to readers for wrong teaching and for cheating.
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