If the arithmetic Mean of 8 and 'x' is 20 ,then find 'x' ?

If the arithmetic mean of 7, 8, x, 11, and 14 is x, x =

If 'a' is the Arithmetic mean of b and c, 'b' is the Geometric mean of c and a, then prove that 'c' is the Harmonic mean of a and b.

The arithmetic mean of 4 and another number is 10. Find the other number.

find the arithmetic mean of the following data.

Insert 3 arithmetic means between 8 and 24.

If the arithmetic means of two positive number a and b (a gt b ) is twice their geometric mean, then find the ratio a: b

The arithmetic mean of the ordinates of the feet of the normals from (3,5) to the parabola y^(2)=8x is

Let x_(1),x_(2) ,……., x_(n) be n observations, and let barx be their arithmetic mean and sigma^(2) be the variance. Statement-1 : Variance of 2x_(1),2x_(2),…….,2x_(n) is 4sigma^(2) . Statement-2 : Arithmetic mean of 2x_(1),2x_(2),…...,2x_(n) is 4barx .

Insert 3 arithmetic means between 8 & 24 .

If x_(1) and x_(2) are the arithmetic and harmonic means of the roots of the equation ax^(2)+bx+c=0 , the quadratic equation whose roots are x_(1) and x_(2) is