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Sequences and Series question

2020 · 7 Jan · Shift 2 · Q21

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PYQ Library
JEE Main
Mathematics
Sequences and Series
2020 · 7 Jan · Shift 2 · Q21

Sequences and Series question

2020 · 7 Jan · Shift 2 · Q21

JEE MainMathematicsSequences and SeriesMCQ+4 / −1

Let

{a_1}

,

{a_2}

,

{a_3}

,....... be a G.P. such that

{a_1}

< 0,

{a_1}

+

{a_2}

= 4 and

{a_3}

+

{a_4}

= 16. If

\sum\limits_{i = 1}^9 {{a_i}} = 4\lambda

, then

\lambda

is equal to:

A
171
B
-171
C
-513
D
${{511} \over 3}$

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