A bag contains 8 red marbles, 7 white marbles, and 6 blue marbles. You draw 5 marbles out at random, without replacement.
Write your answer as a reduced fraction.
What is the probability that all the marbles are red?

The probability that all the marbles are red is   .

What is the probability that none of the marbles are red?
The probability of picking no red marbles is   .