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In blackjack, each card is worth a certain amount of points.

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In blackjack, each card is worth a certain amount of points. [#permalink] New post 30 Apr 2013, 20:37
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Question Stats:

70% (02:21) correct 30% (01:40) wrong based on 61 sessions
In blackjack, each card is worth a certain amount of points. Each numbered card is worth its numerical value, so for example a 7 is worth 7 points. Jacks, queens, and kings are all worth 10 points each, and aces are worth 1 point or 11 points at any time. Blackjack is played with a deck consisting of 13 cards (one of each of the numbers 2-10, one jack, one queen, one king, and one of ace) in each of four suits: clubs, diamonds, hearts, and spades. The player whose hand equals or comes closes to equalling 21 wins. A player may be dealt as many cards as he or she chooses, but any combination of cards summing to a number greater than 21 automatically loses.

If the odds against a certain event’s occurring are x/y, this means that oddsmakers consider there to be x scenarios in which the event does not occur and y scenarios in which it does. If the odds against a certain event are 13/10, what is the approximate probability that the event does happen, expressed as a percent?

1. 13%
2. 43%
3. 56%
4. 76%
5. 130%
[Reveal] Spoiler: OA

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Re: In blackjack, each card is worth a certain amount of points. [#permalink] New post 30 Apr 2013, 23:37
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\frac{x}{y}=\frac{13}{10}

The probability we are looking for is\frac{x}{totCases}=\frac{x}{x+y}=\frac{10}{23}
This is a bit less than 50% so 43% is correct B.

This is a funny question! I spend a couple of minutes reading about the blackjack and then the question in completely unrelated...
Are you sure this is the original text?
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Re: In blackjack, each card is worth a certain amount of points. [#permalink] New post 01 May 2013, 03:43
Zarrolou wrote:
\frac{x}{y}=\frac{13}{10}

The probability we are looking for is\frac{x}{totCases}=\frac{x}{x+y}=\frac{10}{23}
This is a bit less than 50% so 43% is correct B.

This is a funny question! I spend a couple of minutes reading about the blackjack and then the question in completely unrelated...
Are you sure this is the original text?


i have copied the same exact text as was in the question, i will post the pic of the question also later.
Even i had the same problem!!
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Re: In blackjack, each card is worth a certain amount of points. [#permalink] New post 17 Jun 2013, 01:33
I play blackjack so i skipped the explanation part :twisted:
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Re: In blackjack, each card is worth a certain amount of points.   [#permalink] 17 Jun 2013, 01:33
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In blackjack, each card is worth a certain amount of points.

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