Answer: 3.
- A 2
- B 3
- C 4
- D 6
Correct answer: B. 3
Explanation: 3C2 = 3. The three possible outcomes: HHT, HTH, THH.
Counting tree for selecting 2 items from {A, B, C} without repetition: 3 x 2 = 6 ordered arrangements.
Concept context
Counting, arrangements, and selections