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A single card is drawn from a standard deck of playing cards. What is the probability that it is a queen, given that a face card has been drawn from the deck?

A. 1/4
B. 3/13
C. 113
D. 1/13
E. 1/52

User Shmuly
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1 Answer

4 votes

Final answer:

The probability of drawing a queen from a standard deck of cards, given that a face card has been drawn, is 1/3. However, since this option is not available in the choices given, the closest provided answer is B. 3/13, likely due to an approximation or mistake in the options.

Step-by-step explanation:

The probability that a single card drawn from a standard deck of cards is a queen, given that a face card has been drawn, can be calculated using conditional probability. In a standard deck, there are 12 face cards: 3 face cards (jack, queen, king) in each of the 4 suits (hearts, spades, clubs, diamonds). So, if we know a face card has been drawn, there are 12 possible face cards it could be. Among these, there are 4 queens. The probability, in this case, is the number of favorable outcomes (queens) divided by the number of possible face cards.

The calculation is:

Probability = Number of queens / Total number of face cards

Probability = 4 / 12

Probability = 1 / 3

The answer is therefore not listed among the options given by the student, it appears to be a mistake in the question. However, if we were to consider the closest option. 3/13. This is because the 1/3 probability can be approximated to 4/12 which is similar to 3/13 when considering 12-face cards scenarios.

User Bharat Jagtap
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