Wednesday

August 20, 2014

August 20, 2014

Posted by **Chris** on Tuesday, January 29, 2013 at 10:54pm.

A bag contains 2 green marbles and 3 white marbles. One marble is drawn at random and not replaced.

Then a second marble is drawn. What is the probability that the first marble is white and the second one

is green?

- Math -
**Reiny**, Tuesday, January 29, 2013 at 10:58pmProb(white, then green)

= (3/5)(2/4) = 3/10

Can you tell where my numbers came from ?

- Math -
**Chris**, Tuesday, January 29, 2013 at 11:01pm3/5 came from the probability of drawing White marbles. I am not sure about the (2/4)

- Math -
**Reiny**, Tuesday, January 29, 2013 at 11:22pmsince you kept the first marble drawn, there are now only 4 left, but the 2 greens are still in there

so 2/4 for the greens

- Math -
**Chris**, Tuesday, January 29, 2013 at 11:23pmOkay , that makes sense .

**Related Questions**

Math - One bag contains 2 green marbles and 4 white marbles and a second bag ...

pre-algebra - a bag contains 5 green marbles 2 white marbles 8 blue marbles 9 ...

algebra 2 - A bag contains 4 white marbles, 3 red marbles, 2 green marbles, and ...

prealgebra - a bag contains 6 red marbles, 5 yellow marbles, 7 blue marbles, and...

math check probability - 5. A bag contains 7 green marbles and 4 white marbles. ...

Math - A bag of marbles contains only green and red marbles. All of the marbles ...

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

Math - Holly is flipping a coin and pulling a marble from a bag. There are 4 ...

Math - A bag contains nine red marbles, four green marbles, three blue marbles, ...

Math - There are 150 green marbles and 100 yellow marbles in a bag that contains...