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Median

The median of...

Question

The median of the following observations, arranged in ascending order is $15$ .
$10, 12, 14, x - 3, x, x + 2, 25$ . Then find $x$

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Solution

Since median is $15.$
$∴$ middle value is $15.$
$\Rightarrow$ $x - 3 = 15 \Rightarrow x = 18.$

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