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Picking cards (Posted on 2006-08-17) Difficulty: 3 of 5
A player picks random cards from an ordinary card deck, without returning them to the deck. How many cards should he pick so as to get at least one ace with 70% probability?

No Solution Yet Submitted by atheron    
Rating: 3.0000 (1 votes)

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re: solution -- spoiler | Comment 2 of 7 |
(In reply to solution -- spoiler by Charlie)

I'm consistently getting 13 as the number of cards to draw with 70% probability of getting an ace, but it may just be the way I did it. It's a simulation program.

There may be a few jokers in my deck.


  Posted by Penny on 2006-08-17 17:42:02
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