One night a motel has 7 rooms available on the first floor
And 11 rooms available on the second floor. 5 families arrive
That evening. Each family is assigned to one of these rooms
(only one room per family and
Only one family per room).

How many overall outcomes are possible?

In how many possible overall outcomes would exactly 3 of
The families be assigned to the first floor?

Compute the number of outcomes in each box in the Venn diagram below:

0 First Floor
5 Sec. Floor

1 First Floor
4 Sec. Floor

2 First Floor
3 Sec. Floor

3 First Floor
2 Sec. Floor

4 First Floor
1 Sec. Floor

5 First Floor
0 Sec. Floor

And what did you try?