Answer:
top ? = 16
Step-by-step explanation:
top question mark:
notice how 5 X 6 X 4 = 10 X 12 and how 3 X 2 X 10 = 6 X 10
the outside numbers multiplied together is equivalent to ten times the inside number
8 X 20 X 1 = ? X 10
8 X 20 X 1/10 = 16
? = 16