The harmonic mean between two numbers is 21/5, their A.M. `' A '` and G.M. `' G '` satisfy the relation `3A+G^2=36.` Then find the sum of square of numbers.

If H.M. of two number is 4 , then A.M. 'A' and G.M. 'G' satisfy the relation 2A + G^(2) = 27 , then modulus of difference of these two numbers is

The harmonic mean of two numbers is 4. Their arithmetic mean A and the geometric mean G satisfy the relation 2A+G^(2)=27. Find two numbers.

The A.M. between two numbers is 20 and their G.M. is 16. find the numbers.

The arithmetic mean of two numbers is 6 and their geometric mean G and harmonic mean H satisfy the relation G^(2)+3H=48. Find the two numbers.

The arithmetic mean of two positive numbers is 6 and their geometric mean G and harmonic mean H satisfy the relation G^(2)+3H=48 . Then the product of the two numbers is