Does anyone know the answer to this problem ? Thanks

Sorry guys but as you have a small brain

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable