InterviewSolution
Saved Bookmarks
| 1. |
A bag contains 7 white and 9 black balls. Two ballprobability that one of themin secession at random. What are the probability that one offeris white and the other black? |
|
Answer» 7*9/16*15 + 9*7/16*15 = 21/80 + 21/80 = 42/80 = 21/40 |
|