let x_(1),x_(2)......x_(n) be n observations such that sum `x_(i)^(2)=200` and sum `x_(i)=40` then a possible value " of n among the following is
(1) 4
(2) 5
(3) 6
(4) 10

Let x_(1), x_(2),….,x_(n) be n observation such that sum(x_(i))^(2)=400 and sumx_(i)=40 , then a possible value of n among the following is

Let x_(1),x_(2),......x_(n), bem n observations such that sum x_(i)^(2)=400 and sum x_(i)=80. Then a possible value of n amongthe following is (1)12(2)9(3)18(4)15

Let x_(1), x_(2),…..,x_(3) be n observations such that Sigmax_(i)^(2)=300 and Sigmax_(1)=90 . Then a possible value of n among the following is

Let x_(1),x_(2),…x_(n) be n observations such that Sigmax_(i)^(2)=500 and Sigmax_(1)=100 . Then, an impossible value of n among the following is

Ifx_(1),x_(2),....x_(n) are n observations such that sum_(i=1)^(n)(x_(i))^(2)=400 and sum_(i=1)^(n)x_(i)=100 then possible values of n among the following is (1)18(2)20(3)24(4)27