Question

If the 9^th term of an A.P. be zero, then the ratio of its 29^th and 19^th term is.

• A. 1 : 2
• B. 2 : 1
• C. 1 : 3
• D. 3 : 1

Answer 1

Answer: (B)

2 : 1

Answer 2

Given that term $= a + ( 9 - 1 ) d = 0$ $\Rightarrow a + 8 d = 0$

Now ratio of and $19 ^ { t h }$ terms