AP ICET 2017 Shift 2 Paper

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Question : 113 of 200

Marks: +1, -0

If

I_{n}=\{x∈{R}:-\;\;{1}/{n} < x < \;\;{1}/{n}\}

for

n=1,2,3,.........

then

I_7∩I_13

$I_7$
$I_13$
$I_6$
$I_20$

Solution:

I_{7}=\{-\;\;{1}/{7} < x < \;\;{1}/{7}\}

and

I_{13}=\{-\;\;{1}/{13} < x < \;\;{1}/{13}\}

Hence,

I_7∩I_13=I_13

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