A couple interesing percentages

Some interesting percentages in the game of blackjack...

If a dealer has an Ace showing, about 31% of the time they will have a ten underneath. Only card counters should take insurance.
And if that dealer doesn't have a ten underneath with that Ace showing, they have a 12% chance of busting. That's why what to changes so much with an Ace showing.

If a dealer has a 5 or 6 showing, they have the best chance of busting, but it's still only 42%. Yes, you should still stand on your hard 12 or 13, but you're only going to win slightly more than 2 in 5 of those hands. But standing is still better than taking the chance you will bust.

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