the common difference of the AP 2,0 -2,-4
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References (0) ... Ethylene response factor ( ERF) is a major subfamily of the AP2/ERF family and ... Samsun at four different time intervals.
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common difference = -2
Step-by-step explanation:
common difference = a2 - a1
so , a2 = 0
a1 = 2
0-2 = -2
we can also check it by
a3 - a2
-2-0 = -2
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