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medium
$1+\frac{1}{4}+\frac{1}{16}+\frac{1}{64}+\ldots \ldots \infty$ નો સરવાળો
A
$\frac{8}{7}$
B
$\frac{6}{5}$
C
$\frac{5}{4}$
D
$\frac{4}{3}$
Solution
(d)
$S _{\infty}=1+\frac{1}{4}+\frac{1}{16}+\frac{1}{64}+\ldots \ldots \ldots=\frac{1}{1-1 / 4}=\frac{4}{3}$
Standard 11
Physics