Determine Whether the Series Is Convergent or Divergent $\sum _ { n = 1 } ^ { \infty } \left( \frac { 4 n } { 3 n + 1 } \right) ^ { n }$

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Q61: Determine whether the series is convergent

Q62: Determine whether the series is convergent

Q63: Determine whether the series is convergent

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