+0  
 
0
152
1
avatar

A lecture hall contains 20 chairs, all lined in a row. What is the number of ways that five chairs can be chosen, so that no two chairs are adjacent?

 May 19, 2020
 #1
avatar
0

By stars and bars, the number of ways is C(17,6) = 12376.

 Jun 14, 2020

34 Online Users

avatar
avatar
avatar
avatar
avatar
avatar
avatar