Question 1160490: __,10, 35, 97, 220,__
A)1 334
B)2 360
C)4 434
D)6 626
E)8 724
Found 2 solutions by ikleyn, greenestamps:
Answer by ikleyn(52914)   (Show Source):
You can put this solution on YOUR website! .
M A K E S no S E N S E.
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Comment from student: No, it makes sense. n^4/4+n^3/2+n^2/4-2n+5
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My response : Did you come to teach me ?
Let me tell you: if I see similar post next time at the forum, I will re-direct it to the T RASH SECTION
immediately and without any explanations.
Answer by greenestamps(13216)  (Show Source):
You can put this solution on YOUR website!
The problem, and ALL problems like it, are invalid.
There is no way, given just the sequence of numbers and no other information, to know what "the correct" answer is.
All of the answer choices will produce valid sequences.
And any other numbers for the first and sixth terms of the sequence would produce valid sequences.
There is no mathematics involved in solving a problem like this; it is only a guessing game -- trying to guess what pattern (if any!) the author of the problem used to create the problem.
Spend as much (or as little!) time as you want looking for a "nice" pattern which produces the given numbers, which you can then use to predict the first and sixth terms.
But realize that any time and effort you put into finding a "nice" solution might not give you the "right" answer....
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