Which of the following regions are separated by Malda

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


28, 45, 75, 118, 174, ?

17      18        14         ?        7         32

12, 12, 30, 120, ?, 4620

Find the missing number in the given number series.

?, 6, 30, 210, 1890, 18900

156, 182, 210, 240, 272, ?

18, 10, 12, 21, ?, 120

65, 90, 140, ?, 315, 440

33      41      25      49      17       ?

8 12 30 105 ? 2598.75

4      11        22       ?        56      79      106