We are given that the arithmetic progression is defined by :
➝2n + 1
<em>Therefore, </em>
<u>For </u><u>first </u><u>term</u>
➙ n = 1
➝2 × 1 + 1
➝2 + 1
➝ 3
<u>For </u><u>second </u><u>term</u>
➙ n = 2
➝2 × 2 + 1
➝4 + 1
➝ 5
<u>Common </u><u>difference</u>
➙ 2nd term - 1st term
➝5 - 3
➝2
<h3><u>More </u><u>information</u><u>:</u></h3>
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.