In how many ways can 9 people be seated if 3 chairs are available
-
A.
720 -
B.
504 -
C.
336 -
D.
210
Correct Answer: Option B
Explanation
| 9P3 = | _9! | ways |
| (9-3)! |
| = | 9! |
| 6! |
| = | 9x8x7x6! |
| ___6! |
= 504 ways
| 9P3 = | _9! | ways |
| (9-3)! |
| = | 9! |
| 6! |
| = | 9x8x7x6! |
| ___6! |
= 504 ways