Secret Documents 

A businessman in one city needs to send secret documents to his business associate in another city. There are spies trying to get hold of these documents. The documents need to be sent in a case. If the documents are sent in an unlocked case then the documents will be stolen. Anything else in an unlocked case will also get stolen. Both of them have many locks and many cases. Neither of them has the keys to the other person’s locks. How does the businessman send the documents?

See our previous ‘Puzzles of the Day’: 

Puzzle of the Day : 36

Puzzle of the Day : 35



    Case 1 (If cases can be locked without the use of keys)
    Businessman in the 2nd city can send unlocked empty case and the BM in 1st city send the documents in it after locking it.
    Case 2 (If cases cannot be locked …..)
    Not possible

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