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  • math & puzzles Online Quiz - 169
  • Sum of the series (12+22x+32x2+42x3+….......... to infini...
Multiple choice general knowledge math & puzzles

Sum of the series (12+22x+32x2+42x3+….......... to infinity) when |x|<1

  1. 1/9

  2. 1/11

  3. 2/9

  4. 2/11

Reveal answer Fill a bubble to check yourself
C Correct answer

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