(Solved): You have a set of 9 different laptops, with 3 laptops belonging to one of 3 categories: Dell (eatego ...

You have a set of 9 different laptops, with 3 laptops belonging to one of 3 categories: Dell (eategory A), Sony (category B), and HP (category C). You randomly select 4 laptops from this set. What is the probability that you select at least one laptop from each category? ( 5 pts.)