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25 points 2) What value do we need in the blank for the following to be an arithmetic sequence: (3, 6, _, 12, ....)?​
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25 points 2) What value do we need in the blank for the following to be an arithmetic sequence: (3, 6, _, 12, ....)?​

User Thao Nguyen
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Answer: the answer is 9 I think .

User Intgr
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