First slide

Permutations

Question

There are 3 candidates for a lecturership and one is to be selected by the votes of seven men. The number of ways can the votes be given is

Easy

A

_$7^{3}$
B

_$3^{7}$
C

_{$^{7} p_{3}$}
D

_$7!$

Solution

Each man can be voted in 3 ways _{$= 3^{7}$}

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