All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Probability
BlackJack (Posted on 2003-02-12) Difficulty: 2 of 5
When playing a game of blackjack, what are the odds that you will be dealt BlackJack on the first deal? Assume you are playing with one opponent and your opponent is the dealer.

Note: 10, jack, queen and king all are worth 10. Aces are worth 11. You have blackjack when the values of both your cards add up to 21. There is only one deck of cards being dealt out.

See The Solution Submitted by Alan    
Rating: 4.0000 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Change the official solution | Comment 7 of 12 |
Its a shame that the official solution to this problem continues to be 4.65%, when the actual solution, as ably pointed out by fwaff, is 4.83%

Any 'two card 21' hand is called a Blackjack, even if it is not a winning hand (i.e when the dealer also has a Blackjack). Since the question asks, 'what are the odds that you will be dealt Blackjack ...', and not, 'what are the odds that you will be dealt Blackjack and win..' the correct answer is 4.83% and not 4.65%
  Posted by Sanjay on 2003-07-05 09:14:20

Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (23)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information