The 6th term of a geometric progression (GP) is 48. The first term is 1.5. What is the common ratio (CR)?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 2.0.
For a Geometric Progression (GP), the formula for the nth term is: Tn = a × rn-1
Given: T6 = 48, a = 15, n = 6
48 = 1.5 × r6-1
48 = 1.5 × r5
r5 = 48 / 1.5 = 32
r = 2