If the mean of first 'n' natural number is 15, then what is the value of 'n' ?
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we know that sum of first ' n ' natural numbers is given by the formula
now, mean of first n natural numbers = 15
⇒ n = 30 - 1 = 29
now, mean of first n natural numbers = 15
⇒ n = 30 - 1 = 29
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