Question

if 5 times the 5th term of an AP is equal to 8 times of the 8th term ghen show that 13th term is 0​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

13 th term =0

We know,

5th term = a+4d

8th term = a+7d

So, 5(a+4d)=8(a+7d)

5a+20d=8a+56d

8a-5a + 56d-20d=0

3a+36d=0

3(a+12d)=0

a+12d=0

Therefore, 13th term =0