If the mean deviation of the numbers \( 1,1+\mathrm{d}, \ldots ., 1...

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If the mean deviation of the numbers \( 1,1+\mathrm{d}, \ldots ., 1+ \)
\( \mathrm{P} \) \( 100 \mathrm{~d} \) from their mean is 255 , then a value of \( \mathrm{d} \) is:

W
(1) 10.1
(2) 20.2
(3) 10
(4) 5.05
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