Question

If the sum of n terms of an ap is 3n*2+ 5n, then find nth term

Answer 1

Answer:

let n=1

3(1)*2+5(1)

S1=11

a=11(S1 is the sum of 1st term)

S2=3(2)*2+5(2)

=22

d=S2-S1

=11

Tn=a+(n-1)d

=11+(n-1)11

=11+11n-11

=11n

??

Man I think something is incomplete in your question....