Question 63

Let $$a_1, a_2, a_3, ….., a_{100}$$ be an arithmetic progression with $$a_1 = 3$$ and $$S_p = \sum_{i=1}^{p}a_i, 1 \leq p \leq 100$$. For any integer n with $$1 \leq n \leq 20$$, let $$m = 5n$$. If $$\frac{S_m}{S_n}$$ does not depend on n, then $$a_2$$ is

Correct Answer: 9

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