posted by Jerald on .
A bag of marbles contains only green and red marbles. All of the marbles are the same size. If the probability of selecting a green marble is 1/2. Which is most likely to be the number of green and red marbles in the bag?
A.2 green 4 red
B.4 green 4 red
C.2 green 1 red
D.1 green 3 red
E. 3 green 6 red
I don't know which one
A and E both equal 1/2
Oops - you're not understanding the problem.
If there are two marbles, one green and one red, your chance of drawing a green marble is 1 out of 2 or 1/2.
You have to have the same number of each color of marbles to have the odds be 1/2.