Question: You are working in a store that stocks bangles. Three boxes of bangles have been incorrectly labeled. The labels say Red Bangles, Green Bangles and Red & Green Bangles. How can you re-label the boxes correctly, by taking only one bangle from one box?
Answer:
Keep in mind that boxes are incorrectly labeled.
Take out one bangle from the box labeled "Red & Green Bangles". There are 2 possibilities:
If that bangle is Red, it means that box contains Red Bangles. The box labeled as "Green Bangles" contains Red & Green Bangles. And box labeled "Red Bangles" contains Green bangles.
RED GREEN BOX --- Red Bangles
RED BOX --- Green Bangles
GREEN BOX --- Red & Green Bangles
If that bangle is Green, it means that box contains Green Bangles. The box labeled as "Green Bangles" contains Red Bangles. And box labeled "Red Bangles" contains Red & Green Bangles.
RED GREEN BOX --- Green Bangles
RED BOX --- Red & Green Bangles
GREEN BOX --- Red Bangles