Find the positive integer $k$ for which the coefficient of $x^k$ in the expansion of $(x + 3)^{50}$ is maximized.
Question:
Find the positive integer $k$ for which the coefficient of $x^k$ in the expansion of $(x + 3)^{50}$ is maximized.
Answer:
Let's think step by step.

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Find the positive integer $k$ for which the coefficient of $x^k$ in the expansion of $(x + 3)^{50}$ is maximized.
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