How many different values are possible for the random variable X

Question

Assume that the machine yields the item selected 70 percent of the time, and returns nothing 30 percent of the time. Three individuals attempt to use the machine. Let X be defined as the number of individuals who obtain the item selected.
How many different values are possible for the random variable X

Answer 1

X must be an integer 0, 1, 2, or 3.   So there are four possible values for X.