in an A.P. write its next three terms. a + b, (a + 1) + b, (a + 1) + (b + 1), … please explain the question in detail.for more info see below image
https://imgur.com/a/hWDcG
in the sollution it is given that a+2 and b+1 is written how it happend to do ,give full explanation to this question
