Question

If 7th and 13th terms of an AP be 34 and 6 respectively then its 18th term is

Answer 1

Step-by-step explanation:

7th TERM= a + 6d=34

13th term=a + 12d=6

__________

-6d=28

d= - 14/3 a=62

so, 18 term =62+17×-14/3

62-17×14

_________

3

=solve it.. it's the answer..