?

A computer store sells four computer models designated as P104, X104, A104, and S104. The store manager has made random number assignments to represent customer choices based on past sales data. The assignments are shown below.
Model ..Random Numbers
P104 ....0-1
X104 ....2-6
A104 ....7-8
S104 ....9
The probability that a customer will select model P104 is