Let a 1 , a 2 , a 3 , .... be in harmonic progression with a 1 = 5 and a 20 = 25 . The…
Mathematics · JEE Advanced · NTA Exams — Progression and Series
Let a1, a2, a3, .... be in harmonic progression with a1 = 5 and a20 = 25 . The least positive integer n for which an < 0 is
- 22
- 23
- 24
- 25
Answer
(B) 23
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