InterviewSolution
Saved Bookmarks
| 1. |
A bag contains 6 white and 6 black balls. One by one the balls are drawn from the bag with replacement then the probability that 3rd time a white ball is drawn in 7th draw is: |
|
Answer» `5/16` Required probability `=""^(6)C_(2)(1/2)^(2)(1/2)^(4) xx 1/2 = 15/128` |
|