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OpenStudy (anonymous):
Which of the following is an arithmetic sequence? 2, 4, 8, 16, ... 12, 4, 4/3, 16/3 ... 1/2, -1/2, -3/2, -5/2 ... 1/2, -1/2, 1/2, -1/2 ...
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OpenStudy (anonymous):
1st and 2nd
Parth (parthkohli):
1st one is geometric, as we are MULTIPLYING 2 again and again. 2nd one is again geometric. Third one is arithmetic :) Fourth is neither.
Parth (parthkohli):
In third one we have -1 as the common difference, if you notice.
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