Question

1. Find the middle terms of an AP 9, 15, 21, 27 ...... 183,​

Answer 1

Answer:

a=9

d=15-9=6

a+(n-1)d= 183

9+(n-1)6= 183

(n-1)6= 174

n-1= 29

n= 30

NOW the middle term N= n/2 = 15

t½=9+(15-1)6

= 9+84

t½= 93