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Created page with "== Definition == An arithmetic progression (AP) is a sequence of numbers in which the difference between any two successive members is a constant. This difference is often referred to as the common difference. If the first term of an arithmetic progression is ''a'' and the common difference is ''d'', then the ''n''th term of the sequence is given by ''a + (n - 1)d''. Image:Detail-61280.jpg|thumb|center|A line of evenly spaced dots representi..."
