SOLUTION: Select the option for "?" that continues the pattern in each question. 3, -6, 12, 4, 20, ? 13 14 6 16 it's for a caliper test at my office. I have no idea why nor do I have

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Question 1153678: Select the option for "?" that continues the pattern in each question.
3, -6, 12, 4, 20, ?
13
14
6
16
it's for a caliper test at my office. I have no idea why nor do I have any idea how to solve this...
Answer by math_helper(2461)   (Show Source): You can put this solution on YOUR website!



3, -6, 12, 4, 20, ?



Pattern seems to be 3-9 = -6, -6+18 = 12, 12-8 = 4, 4+16 = 20, ...



So the additions are, starting with 3:  -9, +18, -8, +16, next is -7 (?) 



The continuation I see is  20-7 = 13 

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