3, 4, 12, 48, ?

328, 164, 82, ?

1, 4, 9, 16, 25, ?

 $-\ \frac{1\ }{5},\ 1,-5,\ 25$   

5, 11, 23, 47, ?

A, D, G, J, ?

AZ, CX, EV, _ , IR

2Y, 5V, _ , 17J,26A

9 ,30, 51, 72, ?