Find the first term a1 and the common difference d of the arithmetic sequence.2, 3, 4, 5, . . .
A. a1 = 2, d = 2
B. a1 = 1, d = 1
C. a1 = 2, d = 1
D. a1 = 1, d = 3
Answer: C
Mathematics
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A. 
, 
B. 
, 
C. 
, 
D. 
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