Question

A box has four cards with the letters J, K, L, and M. You pick a card and keep it. Then, you pick a second card. What is the probability of picking a J first, followed by a K?
A. 1/4
B. 1/12
C. 1/8
D. 1/16

Answer 1

P(first = J) = 1/4. Given J was first, P(second = K) = 1/3. Multiply: (1/4)(1/3) = 1/12. Answer: B.