Question

find the common difference of an ap whose 12 and 5th term is zero

Answer 1

Answer:

a12

a+11d=0

d=0

a5

a+4d=0

d=0

Step-by-step explanation:

Answer 2

Atq..

12 term=0

=>a+11d=0

=>a=-11d

-------------------(i)

Also

5th term=0

=>a+4d=0

=>-11d+4d=0

=>-7d=0

=>d=0

Putting in (i),we get

a=-11*0

=>a=0