An arithmetic sequence (arithmetic progression) is a number sequence with a common difference between successive terms. By using the arithmetic sequence formula, we can easily find the value of a term and the common difference in the sequence.

• arithmetic sequence: a sequence with a common difference between successive terms

• The nth term, ${t_n}$ ,of an arithmetic sequence:

${t_n} = {t_1} + \left( {n - 1} \right)d$

where, ${t_n}$: nth term

${t_1}$: first term

$d$ : common difference

• The nth term, ${t_n}$ ,of an arithmetic sequence:

${t_n} = {t_1} + \left( {n - 1} \right)d$

where, ${t_n}$: nth term

${t_1}$: first term

$d$ : common difference