If a 1 , a 2 , a 3 , ................, a n are distinct odd natural numbers not divisible…
Mathematics · JEE Main · NTA Exams — Progression and Series
If a1, a2, a3, ................, an are distinct odd natural numbers not divisible by any prime greater than 5, then \(\frac{1}{a_{1}}+\frac{1}{a_{2}}+\ldots+\frac{1}{a_{n}}<\)
- 1
- 2
- 0
- None of these
Answer
(A) 1
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