What is the name of line of volcanic mountains found in the center of the ocean

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 %.

In the construction of new housing development, which factor of production can be categorized as land?

How long does it take neptune to orbit the sun?