The common difference is 6.
What is Arithmetic Progression?
We can define an arithmetic progression (AP) in two ways:
An arithmetic progression is a sequence where the differences between every two consecutive terms are the same.
An arithmetic progression is a sequence where each term, except the first term, is obtained by adding a fixed number to its previous term.
For example, 1, 5, 9, 13, 17, 21, 25, 29, 33, ... has
a = 1 (the first term)
d = 4 (the "common difference" between terms)
In general an arithmetic sequence can be written like: {a, a+d, a+2d, a+3d, ... }.
Given:
2, 8, 14, 20, 26, ...
First term , a= 2
d= a2 - a1
d= 8-2
d=6
Again.
d= a5- a4
d= 26-20
d= 6
Hence, the common difference is 6.
Learn more about Arithmetic progression here:
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