Question

Find the middle term of the AP: 7, 13, 19, ....., 235.​

Answer 1

Answer:

Hope it helps you friend.

Answer 2

Step-by-step explanation:

here ,

a=7

d=13-7=6

an=235

=>a+(n-1)d=235

7+(n-1)6=235

6n-6=235-7

6n=228+6

n=234/6

=39

so the middle term is

39+1/2=40/2=20th

a20=7+19×6

=7+114

=121