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प्रश्न
Select the correct option from the given alternatives :
If the S.D. of first n natural numbers is `sqrt(2)`, then the value of n must be ––––––.
विकल्प
5
4
7
6
उत्तर
If the S.D. of first n natural numbers is `sqrt(2)`, then the value of n must be 5.
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