Question

Find 12 tem of AP 3, 15, 27, 39, Using the fomula method​

Answer 1

Answer:

12 th term =a+11d

a=3,d=12

Now,a+11d=3+11×12

=3+132

=135

Answer 2

a-3

d: 15-3=12

n=12

an =a+(n-1)d

=3+(12-1)12

=3+11×12

=3+132

=135

So,. 12th term of AP is 135