Question

Which term of AP 3,15,27,39,........will be 132more than its 54th term

Answer 1

ok.... listen ...... a=3 d=12 54th term = a+(n-1)d
an= 3 + (53)12 =636 .....
= 636+132 = 798
798 = 3+(n-1)12
789-3 =12n-12
786+12=12n
798=12n
n=798/12