Blackjack Brainteaser discussed in Blackjack/Gambling at Wizard of Vegas

glenwiggy

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Posts: 55

Joined: Mar 26, 2012

January 8th, 2016 at 6:15:35 PM permalink

I found this on my "riddle-a-day" calendar for today...give it a shot!

https://drive.google.com/file/d/0ByNlO__CmSA6ZHpFN2NrUlhFWGc/view?usp=sharing

Glen Wiggy
Author of "1536 Free Waters and Other Blackjack Endeavors--Finding Profit and Humor in Card-Counting"

teliot

teliot

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Posts: 2871

Joined: Oct 19, 2009

January 8th, 2016 at 6:41:21 PM permalink

Add up all the squares, with Ace = 1, you get 84, which is 21 x 4. So the answer is that there are four regions that add up to 21 each, with Aces = 1. If you count any Ace as 11, then the total is either 94 or 104, neither of which is divisible by 21.

So. Four regions, Ace = 1. You can do it!

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