## Invitation to Computer Science 8th Edition

For a list of 3 items, we have $3 !=6$ permutations, as follows: $\begin{array}{ll} {[4,3,7]} & {(1)} \\ {[4,7,3]} & {(2)} \\ {[7,3,4]} & {(3)} \\ {[7,4,3]} & {(4)} \\ {[3,4,7]} & {(5)} \\ {[3,7,4]} & {(6)} \end{array}$
For a list of 3 items, we have $3 !=6$ permutations, as follows: $\begin{array}{ll} {[4,3,7]} & {(1)} \\ {[4,7,3]} & {(2)} \\ {[7,3,4]} & {(3)} \\ {[7,4,3]} & {(4)} \\ {[3,4,7]} & {(5)} \\ {[3,7,4]} & {(6)} \end{array}$