If the arithmetic mean of two positive number a and b (a `gtb`) is twice their geometric mean then a : b is

If H_(1),H_(2) are two harmonic means between two positive numbers a and b (aneb) , A and G are the arithmetic and geometric means between a and b, then (H_(2)+H_(1))/(H_(2)H_(1)) is

The arithmetic mean of two numbers x and y is 3 and geometric mean is 1. Then x^(2) + y^(2) is equal to

Let a be a positive number such that the arithmetic mean of a and 2 exceeds their geometric mean by 1. Then, the value of a is

The value of arithmetic mean of differences of a finite number of observations from their arithmetic mean is……….

Calculate the arithmetic mean of even numbers' and odd numbers from 1 to 100 ?

Geometric mean of 16 and 4 is …………..

The arithmetic mean of 7 consecutive integers starting with 'a' is m. Then, the arithmetic mean of 11 consecutive integers starting with 'a+2' is

Insert 4 geometric means between 4 and 972.