निम्नलिखित

32      48      96     ?     720     2520

8         27          64         125       ?         343 

72, 97, 147, ?, 322, 447

1056        264        132         33        ?         4.125

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

206, 187, ?, 157, 146, 139

500, 250, 750, 375, 1125, 562.5, ?

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

17, 21, 30, 46, ?, 107

306, 272, 240, ?, 182, 156

100, 120, 260, ?, 3220, 16120