The Marble Conundrum
The colors are wrong, but use your imagination! |
You have three
containers. One has only red marbles, one has only blue marbles and the third
has an equal number of red and blue marbles. The labels on the containers
have intentionally been switched so that each container is now marked
incorrectly.
Your job is to
re-label the containers correctly. Of course you could
just look in the containers to find out which labels match, but can you do it
without looking into each container? Reach into any one of the containers and
select one marble. Can you now correctly label all three containers? If not,
select a second marble from any container.
What is the fewest
number of marbles you need to inspect in order to correctly label each
container?
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