Asap! nobody has the right answer to this!
christina is randomly choosing 3 movies to take on vacation from 9 action movies, seven science fiction movies, and four comedies. which statement is true?
a.) the probability that christina will choose three comedies can be expressed as 1/4c3
b.) the probability that christina will choose three action movies can be expressed as 20c3/9c3
c.) the probability that christina will not choose all comedies can be expressed as 1 - 4c3/20c4
d.) the probability that christina will not choose all action movies can be expressed as 1 - 9c3/20c3
a little clarification on how you got the answer is much appreciated as well!