Sequences and Series Part 2

Section: Mathematics

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Question : 28 of 100

Marks: +1, -0

Let a1,a2,a3,... be an A.P. If

∞

∑

r=1

‌

ar

2r

=4, then 4a2 is equal to ________.

[29-Jul-2022-Shift-1]

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