Answer: 5C3 × 4C2 = 60.
- A 10 × 6 = 60
- B 5C3 × 4C2 = 60
- C 120
- D 5+4=9
Correct answer: B. 5C3 × 4C2 = 60
Explanation: 5C3 × 4C2 = 10 × 6 = 60. Independent choices multiplied together.
Counting tree for selecting 2 items from {A, B, C} without repetition: 3 x 2 = 6 ordered arrangements.
Concept context
Counting, arrangements, and selections