Saturday

April 19, 2014

April 19, 2014

Posted by **Sandy** on Tuesday, January 25, 2011 at 2:23pm.

- the probability that all 4 are black?

-the probability that exactly two are blue and none are red?

- math -
**CODY**, Tuesday, January 25, 2011 at 10:29pm2/5

- math -
**PsyDAG**, Wednesday, January 26, 2011 at 12:32pmFirst black marble = 5/13, second = 4/12, third = 3/11, fourth = 2/10.

The probability of all events occurring is found by multiplying the individual probabilities.

First blue = 5/13, second = 4/12, first non-red = 8/11, second non-red = 7/10.

The probability of all events occurring is found by multiplying the individual probabilities.

**Related Questions**

pre calculus - A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles...

math-algebra - 7. A bag contains 5 red marbles, 6 green marbles, and 9 blue ...

math-algebra - 7. A bag contains 5 red marbles, 6 green marbles, and 9 blue ...

Math-Probability - Hello, I'm trying to figure out this probability problem. Can...

probability - George has a bag of marbles. Inside the bag are 5 red marbles, 3 ...

Math, please check work - A bag contains 7 red marbles, 2 blue marbles, and 1 ...

Math - A bag contains 4 green marbles, 6 red marbles, and 2 white marbles. Three...

Math - A box contains four red marbles, seven white marbles, and five blue ...

probability - A set of five marbles is selected (without replacement) from a bag...

algebra - Four marbles are drawn at random from a bag containing 7 black ...