Jacob G.

asked • 08/11/19

Blackjack Probability

A Blackjack hand is often dealt with one card face up and one card face down. What is the probability that the sum of your two cards will be exactly 21 if the face up card is an Ace? (Assume no other cards have been dealt so far.)

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Mark H. answered • 08/11/19

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Since the Ace is already specified, the only question is the probability of drawing a card valued at 10. There are a total of 12 cards with a value of 10, and you have 51 cards to draw from. Therefore, the probability is 12/51, which simplifies to 4/17

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