Tuesday, January 21, 2014

Q : You have three boxes.
One is labeled "Red Balls"
another is labeled "Blue Balls".
The last one is labeled "Red & Blue Balls".
You know that each box is labeled incorrectly.
You may ask me to pick one ball from one box which you choose.

How can you label the boxes correctly?

A:
Remember that the puzzle says "ALL" boxes are labeled incorrectly. So,
Pick one ball from the one labeled "Red & Blue Balls".
This box must contain either only Red Balls or only Blue Balls.

If you find a Blue Ball, label the box Blue Balls,
then change the Blue Balls box to Red Balls,
and the Red Balls box to "Red & Blue Balls"

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