If 10 is the geometric mean of 25 and x,then find the value of x.

If x is the geometric mean of 16 and 9, find x.

If x is the geometric mean of 16 and 9, find x.

(x-4) is geometric mean of (x-5) and (x-2) find the value of x

The geometric mean of 20 and 45 is ……….

If (28-x) is the mean proportional of (23-x) and (19-x) then find the value of x.

In the expansion of (k + x)^8 , the coefficient of x^5 is 10 times the coefficient of x^6 . Find the value of k.

The probability distribution of a random variable X is given below. If its mean is 4.2. then find the values of a and b.

If the mean of 3, 7, 11 and x is 9, what is the value of x?