Final answer:
To find the probability of selecting an apartment in York or Lancaster, divide the number of apartments in York or Lancaster by the total number of apartments.
Step-by-step explanation:
In order to find the probability that a randomly selected apartment is located in York or Lancaster, we need to know the number of apartments in each location. Once we have that information, we can calculate the probability using the formula:
Probability = Number of Apartments in York or Lancaster / Total Number of Apartments
For example, let's say there are 100 apartments in York and 200 apartments in Lancaster. The total number of apartments would be 300, and the probability would be:
Probability = (100 + 200) / 300 = 300 / 300 = 1
So the probability that a randomly selected apartment is located in York or Lancaster is 1 or 100%.