SOLUTION: Can you answer this question. this is it. 18 5 3 1 36 7 4 2 45 6 5 3 ??? 3 2 1

Question 1024776: Can you answer this question.
this is it.
18 5 3 1
36 7 4 2
45 6 5 3
??? 3 2 1
Find the question mark.
Answer by mathmate(429) (Show Source): You can put this solution on YOUR website!

Question:
Can you answer this question.
this is it.
18 5 3 1
36 7 4 2
45 6 5 3
??? 3 2 1
Find the question mark.

Solution:
There can be many solutions to this class of problems where no rule dictates.
As long as all four lines (or column, or otherwise) satisfy the same rule that we invent, the answer should be deemed among the correct ones.
I suggest others to provide other answers.
My solution goes along the following lines:
3(5+1)=18
4(7+2)=36
5(6+3)=45
therefore
2(3+1)=8
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