1.

If Sn = n(4n + 1), then the arithmetic progression is:

A. 5, 12, 20, 28, 36, ….
B. 5, 13, 21, 29, 37, ….
C. 5, 10, 15, 20, 25, ….
D. 5, 14, 22, 30, 38, ….
Answer» C. 5, 10, 15, 20, 25, ….


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