Why the sound produce by the explosion going on the sun are not heard on the earth question in exam?

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 %.

What volcanoes form on a divergent plate margin

Many rivers in central asia come from