Three are three boxes ,
In one box Two white balls
In two box 2 black balls
In three box 1white &1 black
The labels on the boxes are not correct. Then you have to open one box and to find the color of the balls in all boxes.

• open the box which is labeled black & white---if we get black(then black labelled contains white and white labelled contains black&white)..else we get white(then black labelled contains black&white and white labelled contains black)
• 14 years agoHelpfull: Yes(7) No(3)
• I have a choice of opening one box.
  suppose i have opened a box and it is containing a white ball. As given the labels are not correct, I replace with the correct label. Them the remaining labels are also interchanged.
• 5 years agoHelpfull: Yes(0) No(0)