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Box, Locks and Keys (Posted on 2003-07-18) Difficulty: 4 of 5
You want to send a valuable object to a friend securely. You have a box which can be fitted with multiple locks, and you have several locks and their corresponding keys. However, your friend does not have any keys to your locks, and if you send a key in an unlocked box, the key could be copied en route.

How can you send the object securely?

See The Solution Submitted by Ravi Raja    
Rating: 3.4167 (12 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution (Maybe) | Comment 13 of 19 |
Just send the box locked. It never said that the friend had to open the box or anything. It just said to send it to him/her securely.
  Posted by Ryan on 2003-07-23 16:53:46
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