Question

If the second and fifth terms of a G.P. are 24 and 3 respectively, then the sum of first six terms is:

• A. \( 181 \)
• B. \( \frac{181}{2} \)
• C. \( 189 \)
• D. \( \frac{189}{2} \)
• E. \( 191 \)

Hint:

When $r < 1$, the sum of terms will always be less than $a / (1-r)$. Here, the infinite sum would be $48 / (1/2) = 96$. This helps you quickly rule out options (A), (C), and (E).

Answer 1

The Correct Option is D