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Sequences and Series question

2012 · Shift 2 · Q34

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JEE Advanced
Mathematics
Sequences and Series
2012 · Shift 2 · Q34

Sequences and Series question

2012 · Shift 2 · Q34

JEE AdvancedMathematicsSequences and SeriesMCQ+4 / −1

Let

{a_1},{a_2},{a_3},.....

be in harmonic progression with

{a_1} = 5

and

{a_{20}} = 25.

The least positive integer

n

for which

{a_n} \lt 0

is

A
22
B
23
C
24
D
25

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