In how many ways can 9 people be seated if 3 ch... - JAMB Mathematics 2009 Question
In how many ways can 9 people be seated if 3 chairs are available
A
720
B
504
C
336
D
210
correct option: b
| 9P3 = | _9! | ways |
| (9-3)! |
| = | 9! |
| 6! |
| = | 9x8x7x6! |
| ___6! |
= 504 ways
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