An apartment complex offers apartments with four different options, designated by A through D. There are an equal number of apartments with each combination of options.
A
B
C
ID
one bedroom
one bathroom
first floor
two bedrooms
two bathrooms
no special view
golf course view
second floor
three bedrooms
three bathrooms
third floor
lake view
fourth floor
fifth floor
If there is only one apartment left, what is the probability that it is precisely what a person is looking for, namely three bedrooms, three bathrooms, second floor, and a
no special or lake view?
...
The probability is .
(Type an integer or a simplified fraction.)