If logX = (logY)/2 = (logZ)/5, then X4.Y3.Z-2 =?
Choose the most appropriate option.
A) 2
B) 10
C) 1
D) 0
E) 3
(log X)/1 = (logY)/2 = (logZ)/5 = K   =&gt; logX = K, log Y = 2k, log Z = 5K   Thus, log(X4.Y3.Z-2) = 4logX +3logY - 2logZ = 0.   =&gt; X4.Y3.Z-2 = 1.   ANSWER:1
<result>C</result>
If logX = (logY)/2 = (logZ)/5, then X4.Y3.Z-2 =?