Question

The nth term of the sequence is 2n+ 1. Is the sequence ,so formed is AP? if so ,find its 12th term.

Answer 1

Answer:

put n=1 in 2n+1

2×1+1=3

Now,

put n=2 in 2n+1

2×2+1=5

Now,

common difference is 5-3=2

and

1st term is 2

so 12th term is 27