JEE Main 2009 Mathematics question

If the mean deviation of number 1, 1 + d, 1 + 2d, ...., 1 + 100d from their mean is 255 , then the d is equal to

Answer: (3)

Solution

101 terms with mean . Mean deviation \frac{d}{101}$|k - 50| =

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Question ID VK-039181