An arithmetic progression (AP) is a list of numbers in which each term is obtained by adding a fixed number d to the preceding term, except the first term. The fixed number d is called the common difference.
General Form of an Arithmetic ProgressionThe general form of an AP is a, a + d, a + 2d, a + 3d, . . .
General Term of an Arithmetic Progression
an or l or Tn = a + (n - 1)d
Here, a = First Term of an AP
d = Common Difference of an AP
n = No. of terms of an AP
an or l or Tn = last term of an AP