Answer: 9P4.
- A 9×8×7×6 = 3024
- B 9!
- C 9P4
- D 9<sup>4</sup>
Correct answer: C. 9P4
Explanation: 9P4 = 9×8×7×6 = 3024. Options A and C are equivalent.
Counting tree for selecting 2 items from {A, B, C} without repetition: 3 x 2 = 6 ordered arrangements.
Concept context
Counting, arrangements, and selections