Use your logical skills to solve this riddle and leave your answers in the comment section below.
There are three keys to the three doors with different locks on them.
How many attempts would be needed to determine the exact keys for all the doors under all circumstances?
If you get the correct answer, share it with your friends on WhatsApp, Facebook and other social networking sites.
Explanation: the first key will use up 3 tries to open one while the 2nd key will open the second box upon using its 2nd try..and finally the 3rd key shall open the last box