A series whose terms are in …… is called Arithmetic series.

A series whose terms are in Geometric progression is called …….

The sum of the first n terms of an arithmetic series whose nth term is n can be calculate by the formula n(n + )//2 . Which one of the following equals the first eight terms in a series whose nth terms is 2n?

If the first, second and last terms of an arithmetic series are a,b, and c respectively, then the number of terms is

If the first, second and last terms of an arithmetic series are a,b and c respectively , then the number of terms is

Find the middle terms (or terms) and the sum of the following arithmetic series : 3+7+11+15+….95

Find the arithmetic series of n terms whose first term is a and last term is l.

The number of terms in arithmetics series 7, 11, 15,...,139 is

If the last term is 28, the sum of the arithmetic series who's first term is a is 144. If number of terms is 9 find a.

The 1^(st) , 2^(nd) and 3^(rd) terms of an arithmetic series are a , b and a^(2) where 'a' is negative. The 1^(st) , 2^(nd) and 3^(rd) terms of a geometric series are a , a^(2) and b respectively. The sum of the 40 terms of the arithmetic series is

The 1^(st) , 2^(nd) and 3^(rd) terms of an arithmetic series are a , b and a^(2) where 'a' is negative. The 1^(st) , 2^(nd) and 3^(rd) terms of a geometric series are a , a^(2) and b respectively. The sum of the 40 terms of the arithmetic series is