*Mean of n terms If x1, x2, _ _ _ _ _ _ _ _ _ , xn be n quantities then their

*Mean of n terms

If x₁, x₂, _ _ _ _ _ _ _ _ _ , x_n be n quantities then their

If A, G and H be A.M., G.M. and H.M. between two numbers, then

(a) A ³ G ³ H,(b) G² = A .H

Series