如果 Log(P) = (1/2)Log(Q) = (1/3)Log(R)，那么以下哪个选项是正确的?
(A) P 2 = Q 3 R 2
(B) Q 2 = PR
(C) Q 2 = R 3 P 2
(D) R = P 2 Q 2答案：(乙)
解释：
It is given that Log(P) = (1/2)Log(Q) = (1/3)Log(R)
Let Log(P) = (1/2)Log(Q) = (1/3)Log(R) = C
Let the base of log be B
P = BC
Q = B2C
R = B3C
Which means Q2 = PR这个问题的测验