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JEE Math Practice Question

The sum to infinite term of the series $$1 + {2 \over 3} + {6 \over {{3^2}}} + {{10} \over {{3^3}}} + {{14} \over {{3^4}}} + .....$$ is

  1. A.3
  2. B.4
  3. C.6
  4. D.2

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