Abag contains 5 blue marbles, and 3red marbles. a marble is randomly drawn from the bag. the probability of not drawing a black marble is . the probability of drawing a red marble is

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?