Jill is picking out some movies to rent and she has narrowed

Solution

There are 5 mysterious, 6 children\'s, 5 documentaries and 7 horror films.

9 movies i.e. 5 documentaries and 4 of other movies should be selected.

Hence no of ways for this = 18C4 ( as others are 18 and 4 out of this can be selected)

= 3060 ways.