Final answer:
To determine the pmf of the amount of memory x (gb) in a flash drive, we need the probabilities of different memory sizes.
Step-by-step explanation:
The probability mass function (pmf) represents the probability distribution of a discrete random variable. In the case of the amount of memory (x) in a flash drive, the pmf represents the probabilities associated with different memory sizes. To determine the pmf, we need to know the probabilities of different memory sizes in the flash drive.
However, the given question does not provide the probabilities for different memory sizes. Therefore, without additional information, it is not possible to determine the pmf of the amount of memory x (gb) in the flash drive.