Single Answer MCQ
Q-00052052
A G.P. has a first term of 2 and a common ratio of r. If the fourth term equals 16, what is the value of r?
1
2
2
4
3
8
4
16
Answer and Solution
Answer
B. 4
Solution:
The fourth term a_4 = a * r^(4-1) = 2 * r^3 = 16, thus r^3 = 8, hence r = 2.
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