Which of the following test refers that Σuₙ is convergent if…

PYQ UPPSC LT Grade (Assistant Teacher) 2025

Which of the following test refers that Σuₙ is convergent if limₙ→∞[n(uₙ/uₙ₊₁−1)]>1:

  1. A.

    Raabe’s test

  2. B.

    4th Root test

  3. C.

    De-Morgan’s test

  4. D.

    Ratio test

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