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If a1, a2,......,an are n distinct odd n...

If `a_1, a_2,......,a_n` are n distinct odd natural numbers not divisible by any prime greater than 5, then prove that `(1)/(a_1)+(1)/(a_2)+…..+(1)/(a_n) lt 2`.

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MOTION-SEQUENCE & SERIES -Exercise -4 Level -II Previous Year /JEE Advanced
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  15. If a(1),a(2),a(3),"......" be in harmonic progression with a(1)=5 and ...

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