In following question, a number series is given with one term missing. Choose correct alternative
2 , 4 , 12 , 48 , 240 , x
3, 12, 27, 48, 75, 108, (..)
12, 32, 72, 152,
0, 4, 6, 3, 7, 9, 6, , 12
9 , 12 , 11 , 14 , 13 , x , 15