Two cards are drawn successively without replacement from a standard deck of 52 cards. What is the probability that the first card is a spade and the second card is a heart?
Answer
The correct answer is — Step 5: State the final probability as (rounded to four decimal places).
Step-by-step solution
- Step 1: Compute the probability that the first card drawn is a spade: .
- Step 2: After drawing a spade, 51 cards remain, of which 13 are hearts.
- Step 3: Compute the conditional probability that the second card is a heart: .
- Step 4: Multiply the probabilities of the two independent steps: .
- Step 5: State the final probability as (rounded to four decimal places).
Common mistake: Treating draws as independent and using for the second draw
Concept tested: Conditional probability without replacement
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