Question

some basic things of amerthematic progression and what is it ???

Answer 1

formula for a.p

an=a+n-1*d

sn=n/2 *(2a+n-1*d)

and also learn the formulas which are given in ncert class 10 maths book and try to practice examples from it.and than go for exemplar or rs.dont go with rd because in  rd itrs very high level