Question

If the 3rd and 9th term of an ap are 4 and -8 respectively, which of this ap is zero?

Answer 1

Answer:

....... ...................:

Answer 2

Answer:

hello.

Step-by-step explanation:

HERE IS U R ANSWER..

a9 = 0

a + 8d = 0

a = -8d ...... (1)

Now, to prove,

a29 = 2a19

a + 28d = 2(a + 18d)

a + 28d = 2a + 36d

-8d + 28d = -16d + 36d

20d = 20d

Since LHS=RHS, hence proved...

I THINK I AM NOT WRONG..

HOPE IT HELPS U..