If a_ 1 b_ 1 c are three unequal positive quantities in HP, then :

Mathematics · JEE Main · NTA Exams — Progression and Series

1. \(\mathrm{a}^{1 \mathrm{Al}}+\mathrm{c}^{1 \mathrm{Al}}>2 \mathrm{~b}^{1 \mathrm{Al}}\)
2. \(a^{3}+c^{3}>2 b^{3}\)
3. \(a^{5}+c^{5}>2 b^{5}\)
4. All of these

Answer

(D) All of these

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