A.P. Series

A series is in Arithmetic Progression (A.P.), if it has the following form:
a, a+d, a+2d, a+3d, ....
where a=First term and d=Common difference.


Some useful derivations from A.P. Series:

• nth term = a + (n - 1)d.
• Sum of n terms = n[2a + (n - 1)d] / 2.
• Sum of n terms = n(a + l) / 2 where l = Last term.

Posted in: Arithmetic Progression,Numerical Operations,Series Formulae