We are given that the arithmetic progression is defined by :
➝2n + 1
Therefore,
For first term
➙ n = 1
➝2 × 1 + 1
➝2 + 1
➝ 3
For second term
➙ n = 2
➝2 × 2 + 1
➝4 + 1
➝ 5
Common difference
➙ 2nd term - 1st term
➝5 - 3
➝2
More information:
The difference between the successive term and the preceding term is the difference of an arithmetic progression. It is always same for the same arithmetic progression.