arithmetic progression

It's been 8 years since I have studied progression. Still I will try. a = First term n= number of term d= common difference nth Term of the series= a + (n-1)*d Suppose, 1 is the first term and common difference is also 1 and there are total 31 terms. Then it will be days of a month. Term 1 = 1 + (1-1)*1 = 1 Term 2 = 1 + (2-1)*1 = 2 Term 3 = 1 + (3-1)*1 = 3 . . . . Term 31 = 1 + (31-1)*1 = 31 I hope this will help. Happy myLotting!!!

There is geometrical and arithmetic progression-i think arithmetic progression is 1,2,3,4,5......while geometrical progression is 2,4, 6, ....I stand to be corrected because it is a long time since I put my hands on maths