A card is drawn from a well-shuffled standard pack of 52 playing cards. What is the probability of drawing either a king or a red queen?

Answer and explanation

Correct answer: A.

  1. Step 1: Count favorable outcomes in a 52-card deck: there are Kings (2 red, 2 black) and red Queens (Queen of Hearts and Queen of Diamonds).
  2. Step 2: Since the sets of Kings and red Queens are mutually exclusive, total favorable cards . The probability is .
Answer
.
Why not the others: '' accounts for only 4 cards (); '' accounts for only 2 cards (); '' misses one of the Kings.

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