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Old 10-06-2016, 10:10 AM
LSLGuy LSLGuy is offline
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Join Date: Sep 2003
Location: Southeast Florida USA
Posts: 21,037
Late add:

You can restate the problem like this and it becomes really, really obvious:

Originally Posted by Restated Problem
Roll two dice together. On those occasions where one die came up a six, what are the odds the other one is a six?
A: Since the two dice don't communicate, the odds of the second one being a 6 are always 1/6. It doesn't matter what the other die is doing.

This is one of those puzzles where the trick is to ignore most of the setup since that's just there to distract you. "Now everybody watch my left hand very carefully as I fiddle with this magic wand..."

Last edited by LSLGuy; 10-06-2016 at 10:14 AM.