Question

If 19th term of a non-zero $A.P$. is zero, then its ($49th$ term) : ($29th$ term) is :

• A. 3 : 1
• B. 4 : 1
• C. 2 : 1
• D. 1 : 3

Answer 1

Answer: (A)

$a+18d=0$ ...(1)
$\frac{a+48d}{a+28d}=\frac{-18d+48d}{-18d+28d}=\frac{3}{1}$