Which state has the least availability of alluvial

612, 487,?, 396, 388, 387

What will come in place of the question mark (?) in the following series?

7, 20, 59, 176, 527, 1580, ?

114, 156, ?,  238, 274, 304

What should come in place of (?) question mark in the following number series.

1, 2, 6, 24, 120, ?

Which of the following number will replace the question mark (?) and complete the given number series?

4, 5, 12, 39, 160, ?

What will come in place of (?) Question mark in the given number series.

10, 15, 30, 75, 225, 787.5, ?

44, 42, 46, 38, 54, ?

14, 86, 150, ?, 254, 294

What will come in place of the question mark (?) in the following series?

17, 81, 131, 169, 197, ?

18, 10, 12, 21, ?, 120