Let x, y and z all exceed 1 and let w be a positive number such that
\log _{x} w=24, \quad \log _{y} w=40 \text { and } \log _{x y z} w=12
Find \log _{z} \cdot w.
Let x, y and z all exceed 1 and let w be a positive number such that
Find \log _{z} \cdot w.