Probability

Question

Four balls are selected at random without replacement from an urn containing three white balls and five blue balls. Find the probability of the given event. (Round your answer to three decimal places.)
All of the balls are blue.

Answer 1

Shannon,

               There are ₈C₄=70 ways to choose 4 balls out of 8 balls and there are ₅C₄=5 ways to choose 4 blue balls out of the five available so the probability they are all blue is 5/70=.071.

 

Hope this helps

 

Jim