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One card is drawn from a well-shuffled pack of 52 playing cards. Given that the card drawn is red, what is the probability that it is a queen?

Competition practiceData & Probability
  • A1/13
  • B1/26
  • C2/13
  • D1/2

Step-by-Step Solution

There are 26 red cards and 2 of them are queens, so the conditional probability is 2/26 = 1/13. The unconditional probability of a red queen, 2/52 = 1/26, answers a different question.
Answer: A) 1/13

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