# Math Help - Help

1. ## Help

"Of three urns, the first contains 2 white and 4 black cards, the second contains 8 white and four black cards, and the third contains 1 white and 3 black card. If one card is selected from each urn, find the probability that exactly 2 white cards are drawn"

2. You have three cases to calculate and add up.
Here is one: $P\left( {W_1 W_2 B_3 } \right) = \frac{2}{6} \cdot \frac{8}{{12}} \cdot \frac{3}{4}$.

You do the other two cases.
Don't forget to add them up.

3. Thank you Plato but could you show me the other two cases

4. Originally Posted by Infiniti
Could you show me the other two cases?
No. I will not do your work for you.