If the ratio of A.M. between two positive real numbers a and b to their H.M. is m:n then a:b is equal to

If the A.M between two positive numbers a and b is twice theirr G.M., then A : B =

If the ratio of H.M. between two positive numbers 'a' and 'b' (a gt b) is to their G.M. as 12 to 13, prove that a:b is 9:4.

If the ratio of A.M. and G.M. of two positive numbers a and b is m : n, then prove that : a:b=(m+sqrt(m^(2)-n^(2))):(m-sqrt(m^(2)-n^(2)))

If both the A.M. between m and n and G.M. between two distinct positive numbers a and b are equal to (ma+nb)/(m+n) , then n is equal to

If the ratio of H.M. and G.M. between two numbers a and b is 4:5 , then find the ratio of the two number ?

If the sum of m A.M's between two positive numbers is alpha and sum of n A.M's between the same numbers is beta then (alpha)/(beta) =