>Solving a trick book, those are the ones that I can't answer. Any help?
>
>What is the next number in this serie?
>
>0 2 24 252 ( )
>
>a) 625
>b) 3120
>c) 4326
>d) 3121
>e) 4192
>

Sequence is (n ^ n) - n, so next in sequence is 3120