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[" The mean of "25" observations is "36....

[" The mean of "25" observations is "36." Out of these observations if the mean of first "],[13" observations is "32" and that of the last "13" observations is "40," the "13^(" th ")" observation "],[" is : "],[[" (A) "23," (B) "36," (C) "38," (D) "40]]

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