Question 48
Permutation and CombinationIn how many ways can 9 people be seated if 3 chairs are available?
- A.720
- B.504
- C.336
- D.210
Show the answer and explanation
Answer: B (504)
Explanation
Order matters on the chairs: 9P3 = 9 × 8 × 7 = 504.
In how many ways can 9 people be seated if 3 chairs are available?
Answer: B (504)
Order matters on the chairs: 9P3 = 9 × 8 × 7 = 504.