A standard deck of 52 cards contains, inter alia, four Queens.
After a perfect shuffle, one turns cards from the top one after another, until the first Queen appears.

Please provide your justified estimate at what step will the 1st Queen appear.

Before I run the numbers, let me just guess.  I guess that it is expected to be in the middle of the 1st quarter of the deck.  So I would expect it to show up at step 7.

Posted by Steve Herman on 2024-01-30 09:03:45