## Arthmetic Progression Formula :

A.P Series :

nth term of A.P from beginning :

nth term of A.P from end :

Sum of nth term of A.P :

Common difference of A.P :

Single A.M between given two numbers a and b :

n A.M between given two numbers a and b :

Note :

## Geometric Progression Formula :

G.P Series :

nth term of G.P :

Sum of nth terms of G.P :

Sum of infinite term of a G.P :

Common ratio of G.P :

Single G.M between given two numbers a and b :

n G.M’s between given two numbers a and b :

Note For G.P :

## Harmonic Progression Formula :

H.P series :

nth term of H.P :

Common difference of H.P :

Single H.M between given two numbers a and b :

n H.M’s between given two numbers a and b :

Relation between A.M , G.M and H.M :

Some Formula for Sum :

Sum of n terms of an Arithmetic – Geometric Series :

Sum of an infinite Arithmetic – Geometric Sequence :

Note :

A.M , G.M and H.M of two positive real numbers :

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