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Let n be an odd natural number such that the variance of 1, 2, 3, 4, ..., n is 14. Then n is equal to ________.

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Let n be an odd natural number such that the variance of 1, 2, 3, 4, ..., n is 14. Then n is equal to ________.

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1 Answer

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\(\frac{n^2-1}{12}\) = 14

⇒ n = 13

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