CA CPT Model Test Paper 11 with solutions for online practice

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Question : 157 of 200

Marks: +1, -0

Sum of n terms of the series 0.1 + 0.11 + 0.111 + .... is :

$1/9$ {n - (1 - (0.1) $^{\n}$ )}
$1/9 \{n - (1 - (0.1)^{\n} )/9\}$
n - 1 - $(0.1)^{\n} /9$
None of these

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