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  • Find $1+1 / 2+1 / 4+1 / 8+\ldots \infty$Option: 1 5Option: 2 2<div class='qna

Find $1+1 / 2+1 / 4+1 / 8+\ldots \infty$

Option: 1

5


Option: 2

2


Option: 3

10


Option: 4

12


Answers (1)

best_answer

$\mathrm{a}=1, \quad \mathrm{r}=1 / 2$

Here $0<\mathrm{r}<1$. Hence, $\mathrm{S} \infty=\mathrm{a} 1-\mathrm{r}=1 /(1-1 / 2)=1(1 / 2)=2$

Posted by

Devendra Khairwa

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