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- 3, 7, 6, 5, 9, 3, 12, 1, 15, (....)
Question 1:
3, 7, 6, 5, 9, 3, 12, 1, 15, (....) A. 18
B. 13
C. -1
Feedback There are two series, beginning respectively with 3 and 7. In one 3 is added and in another 2 is subtracted.
The next number is 1 - 2 = -1.
The next number is 1 - 2 = -1.
D. 3
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