Question

the sum of 25 terms in the A.P 3, 9/2, 6, 15/2....... is​

Answer 1

Answer

nth term in a Ap =a+(n-1)d

here

a=3 , d=3/2

then 25th term= 3+(25-1)3/2

                        = 3+36

                        =39

Answer 2

hope it helps you......