Question

D 4. If the sum of first n terms of a series is (n + 12), then what is its third term ?

(a) 1
(b) 2​

Answer 1

Answer:

1

Sn = (n+12)

s2 = ( 2+12)=14

s3 = (3+12)= 15

So, term 3 = S3-S4=15-14=1