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JEE Main Mathematics question

MathematicsSequence and SeriesJEE Main

The sum of an infinite geometric series with positive terms is and the sum of the cubes of its terms is . Then the common ratio of this series is

Answer: (C)

Solution

Defect: the stem merges two different questions (the sum of the cubes is printed as , whose value is ) and all four options are solution fragments for that sum, so the common ratio cannot be

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Question ID VK-022092