A jar contains four blue marbles and two red marbles. suppose you choose a marble at random, and do not replace it. then you choose a second marble. find the probability of each event to the nearest tenth of a percent.

a. the first marble is blue and the second is red

b. both marbles are blue

A) 26.7%

B) 40%

The probability of A is given by 4/6 (2/5), since this is done without replacement; there are 4 blue marbles out of 6. When the first one is gone, there are 2 red out of 5 remaining.

The probability of B is given by 4/6 (3/5), since this is done without replacement; there are 4 blue marbles out of 6. When the first one is gone, there are 2 blue out of 5 remaining.