What is the interdependence of the global economy generally called?

What is associated with mid-ocean ridges?

How long does it take for saturn to orbit the sun?

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. the probability that the locker code begins with a prime number is %. the probability that the last digit of the locker code is an odd number is %.