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If a1,a2,a3 …. are in harmonic progressi...

If `a_1,a_2,a_3` …. are in harmonic progression with `a_1=5` and `a_20=25`. Then , the least positive integer n for which `a_n lt 0` , is :

A

22

B

23

C

24

D

25

Text Solution

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The correct Answer is:
D
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