Better Students Ask More Questions.
When 3 marbles a picked from a box with 16 blue, 12 red and 18 green marbles, what is...
1 Answer | add yours
3 marbles are picked from a box that has 16 blue, 12 red and 18 green marbles.
The number of colors of each of the three marbles that can be picked is 3. There are 3^3 = 27 ways in which the marbles can be picked. If only the third marble has to be blue, the other two marbles can be red or green in 2^2 = 4 ways.
This gives the probability that only the 3rd marble is blue as 4/27.
There is a probability of 4/27 that only the 3rd marble is blue.
Posted by justaguide on June 3, 2012 at 1:39 PM (Answer #1)
Join to answer this question
Join a community of thousands of dedicated teachers and students.