An apartment building has the following distribution of apartments:

Question

An apartment building has the following distribution of apartments:

	1 bedroom	2 bedroom	3 bedroom
1st floor	3	1	1
2nd floor	1	3	2
3rd floor	1	4	1

If an apartment is selected at random, what is the probability that it is on the 2nd floor or has 2 bedrooms?

Answer 1

There are 17 possible outcomes (the denominator in probability calculations).

The table you have shown IS your sample space.

Just count up the apartments that satisfy the conditions asked and divide by 17.

Note: only count each apartment once!