Problem
COM-B1-M01-P010 Chair and Secretary
#10
★★☆☆☆ Level 2 of 5
A class has \(12\) students. In how many ways can a chair and a secretary be chosen if they must be different students?
The roles are distinct.
The chair can be chosen in \(12\) ways, then the secretary in \(11\) ways. Total: \(12\cdot11=132\).
Contrasts with choosing two identical roles.